DEVELOP THE elite STRENGTH YOU NEED TO play your game.

It's time to start playing more confident on the ball. Win the battles. And truly play your game.    

Lacrosse is no longer just about the biggest players - it's about the most effective. But the reality is that in both the mens and women's game -  strong players are effective players. whether it’s winning lose balls, getting strong on the ball or just getting into and dominating more physical areas on the field.

Adding muscle and strength can transform a player and that's that the Relentless Size & Strength program was built for. More size. More strength. More effectiveness on the field.

sign up & start training today


“We just don’t think he’s strong enough to get into gritty spots of the next level...”

Tyler had just finished one of his best seasons ever. 

He finished in the top 3 in both points and goals – including making some big moment plays. 

He was the elusive dynamic player that could burn defenders and find open space on the field to create more opportunities for himself. His skill with the ball was impressive & he could ge

But admittedly, he was "undersized" in a way that  D1 coaches took note of it. 

A couple of players on his team had earned D1 one spots and while he had multiple conversations with Coaches, no offers had come through. 

And that’s when we heard from a friend who was coaching at a big D1 school. 

“He’s a solid player, all the right technical tools, but small – and it’s not that don’t like undersized players, but we’ve seen him get outmuscled for ground balls and shy away from physicality or get into the gritty battles. That’s the stuff that separates players.”

It might have been tough feedback to hear for Tyler – but it was helpful. 

He even recognized that he didn’t feel the confident in battles or drives and had become a parameter player because he knew he could thrive there. 

If I could develop that type of strength on the ball you see elite players have.. I'd honestly probably have more confidence driving the net or engaging defenders more... It honestly would transform my game”. 

For the past few years he’d conceded that it was impossible to gain muscle and that he had the “skinny genes” – but we broke down his training, he was using old school workouts and expecting to throw on bodybuilder muscle. 

So we worked together on a plan that would completely change how he trains.  

We created workouts that would add strategic muscle without adding the bulk that slows players down. We also set out to create not only elite foundational strength truly functional strength & power that translate to the field and just the weight room. 

Ultimately – we set out to create a program that would let him play stronger and more aggressively on the field. 

The result showed. 

Each week his lifts increased and he noticeably felt stronger in the gym. He added 6lbs in the first phase, and then another 6 in the second, and 4 in the third for a total of 18lbs in 12 weeks – not bad for a player with self proclaimed “skinny genes”. 

More importantly – he started to notice results on the field. 

He started feeling more explosive in his speed work. His shot was feeling both smoother and more powerful. His Coach started commenting on how he was getting more explosive in cuts & that his speed had really been taken to a whole new level. 

When the season started is where the results really started to show. 

There was no longer any area of the field he shied away from. No battle for a ground ball that he avoided. He started to physically engage defenders more and play more aggressive – instead of looking to get rid of the ball with pressure he had confidence in himself to make drives and get into the gritty spots. 

He threw up massive numbers in his first 5 games before D1 Coaches started reaching out. 

Our friend reached back out: “Your guy is playing like an absolute demon out there – he’s a completely different player this season. He’s leading that team's offense completely. I saw him drive the net for 3 goals last week.”  

It wasn’t long before the offers started coming in – and by the end of the season he had doubled his points, 4x’ed his ground balls, and received offers from 6 schools.

It was a true testimony to how working on the right things can transform your game & set you up for a new level of success. 

We rolled out this playbook with more players, both male and female, who were deemed “lanky” or “undersized” and needed to add muscle to their game. Time & time again the results not only transformed their body – but their game as well. 

The Relentless Size & Strength Program was born. 

Since then, the program has been used by hundreds of players from JV to NCAA and beyond to break through their plateaus and elevate their game. 

So now’s your chance to eliminate doubters & start to play a more confident, aggressive and dominant game. It’s time to start training relentless. 

the Strength & strength program

The training system built to add the size & strength that counts for lacrosse players.

The Relentless Size & Strength Program is the Strength & Conditioning program specifically designed for lacrosse to add meaningful muscle and add the strength that translates to the ice.  

This proven 12-week training system has been used by hundreds of players at all levels to develop elite strength and add meaningful muscle while staying quick, agile, and mobile, and developing the physical attributes they need to take their game to the next level.

build a body built for lacrosse.

Start making your workouts count. Start training exact attributes that translate to lacrosse.

At Relentless, we build workouts for on-field performance. Delivering the exact Strength & Conditioning lacrosse players need to start moving, performing, and playing better where it counts. We deliver the training that translates.


Create a mobile body with exercises that address structural imbalances & restrictions so that you feel & move better.


Develop truly elite  strength, with an intense focus on creating the functional strength that translates on the field.


Unlock the power that translates to on-field speed & agility while developing the shot power that leads to goals.


Enhance the athleticism to dominate games with plyo, agility, and footwork drills all designed for next level speed.

hockey workout program on phone

workouts designed for lacrosse players.

The exact workout structure that elite lacrosse players are using to build their body.

No more fluff, randomness, or bodybuilding style workouts. This is training 2.0 - with full-body and integrative workouts designed to challenge every facet of your body with each workout including:

Pre-Hab & Functional Mobility
Speed & Athleticism
Integrative Strength & Power
Conditioning, Core, & Mobility

12 weeks of optimized training

Eliminate the guesswork from your training & get the exact game plan to dial in your training.

Build isn't elite strength doesn't happen randomly - it demands strategic structure. The 12 Size & Strength Program is designed by a world-class Strength Coach & lacrosse performance specialist to deliever that exact structure you to develop.

With 3 distinct phases and progressive weekly workouts built to be continuously pushing you towards your training goals- you can training confidently knowing that you're on the right track with your development.

phase 1: 

rebuilding foundations

Reconstruct & rewire. We're going to rebuild your body to move better while also building elite foundations to move, feel, and perform better than ever before.

phase 2: 

elite strength development

True strength development. Rapidly add the muscle & strength that matters while also training the nervous system to express more rapid force.

phase 3: 

on-field translation

From the gym to the field. Add a layer of even further lacrosse specificity by developing the strength, power, and conditioning that translates to the field.

meet your strength coach

The Size & Strength Program was created by Coach Kyle –  Strength Coach, Lacrosse Performance Specialist, and founder of Relentless Lacrosse. 

Originally working with elite hockey players, Kyle earned a reputation for the training that actually translated to the game and quickly became sought after by local lacrosse pro and NCAA players. 

Combining intensive academic education and thousands of hours working hands on lacrosse players in the gym – Kyle has  worked on-field with elite skills coaches to break down the movement mechanics that can be refined and optimized through Relentless programs.

Coach Kyle has become a go-to authority on performance optimization for lacrosse players and continues to evolve Relentless programs to ensure players have access to the best possible resources to elevate their game.

the most comprehensive workout program for lacrosse players. 

The Relentless Explosive Speed & Power Program is the complete training system that delivers everything you need to eliminate guesswork from your training and get the exact game plan to develop elite speed.


Feature item

36 Unique workouts

Stop repeating the same workout for 4 weeks. We've designed 36 unique workouts so that each week comes with variety & challenge.
Feature item

video demonstrations

With a video library of 250+ exercises, always know the perfect form with an exact demonstration of each exercise in your workouts.
  • Feature item

    Interative pdfs

    No more boring PDFs. Each phase comes with a completely interactive & clickable PDFs.
  • Feature item

    printable tracking copies

    Want to get off your phone at the gym? Bring a printable copy of your workouts and track your progress with each workout.

plus free bonus resources

Becoming an elite lacrosse player goes beyond just workouts, it's becoming relentless with getting better. That's why we've created all the resources you need to truly take your training, lifestyle, and performance to the next level.

elite speed guide for lacrosse

$67.99 Value
  • Feature item
    Over 20 lacrosse-specific speed workouts that are specifically designed to develop elite athleticism and enhance the speed that translates to the field
  • Feature item
    Attack your specific speed needs with workouts focused on quick feet, first steps acceleration, top-end speed and power, change of direction, and multi-directional speed.
  • Feature item
    Complete workouts you can do anywhere, anytime. It doesn't have to be fancy to be effective. We have workouts do with ladders, hurdles, cones, and even just an empty field.

mobility, maintenance & recovery guide for lacrose players

$59.99 Value
  • Feature item
    The complete guide to building a limitless body that delivers the workouts you need to eliminate aches and pains, reclaim range of motion, and optimize your movements.
  • Feature item
    10+ mobility routines including active recovery workouts, functional mobility sessions, and passive stretch-based sequences – each specifically designed for lacrosse players.
  • Feature item
    Complete foam rolling protocols for lacrosse players to release common areas with tension and improve tissue quality.
hockey mobility workout training program

complete conditioning for lacrosse guide

$49.99 Value
  • Feature item
    Over 20 conditioning workouts specifically designed for lacrosse players to have more gas in the take. While others slow down, relentless players dominate.
  • Feature item
    Specifically designed for the energy system demands of lacrosse players with short-burst and high intensity work.
  • Feature item
    Choose your training method with workouts including: outdoor field workouts, bike workouts, treadmill workouts, and HIIT based bodyweight/complex-style workouts.

relentless anywhere guide

$69.99 Value
  • Feature item
    21 Workouts you can do anywhere, anytime. A busy schedule might keep you from hitting the gym, but it should hold you back from getting in a high quality workout. Now you can stay on track with your workouts from home or on the road.
  • Feature item
    Minimalist workouts designed for maximal results. Fit into your busy schedule with short and intense workouts designed to challenge all strength, power, speed, and mobility of lacrosse players.
  • Feature item
    Choose your workout based on your equipment. Workouts designed with just bodyweight, just bands, or just dumbbells – the equipment doesn’t matter, the work does.
at home hockey workout program

peak performance nutrition for lacrosse players

$99.99 Value
  • Feature item
    The most comprehensive nutrition guide for lacrosse players on the market with 55 pages taking a deep dive in everything from hydration, to macronutrients, to optimizing performance and recovery.
  • Feature item
    Maximize your performance on game day with specific nutrition and hydration day protocols and sample meal plans.
  • Feature item
    Learn how to supplement your nutrition for peak performance and recovery with a deep dive into the “must have” supplements for lacrosse players and the protocols for each one. Learn how to take your nutrition to the next level with supplements.

everything you need to transform your game

You're here because you're a lacrosse player that's committed to finding way to take their game to the next level.

And that's who the Relentless Size & Strength Program is built for.

The player who wants the exact blueprint to develop the elite strength that will let them play stronger and dominate on the field.

We've had hundred of players concentrate their training to focusing on the right things and see their development skyrocket - while also adding the muscle and strength they need to transform their game on the field.

It all starts off the field. And it starts by training relentless.

what's included: [total value $546]

12 week strength & conditioning program [$197]

Elite speed guide for Lacrosse [$67]

Relentless mobility & maintaince for lacrosse players [$59]

Complete Conditioning for lacrosse players [$59]

Relentless anywhere workout guide [$67]

peak performance nutriton guide [$99]

Member only video & resources to maximize training

Along with this, Coach Kyle and the Relentless team offers on-going support for players to make sure that you're maximizing this off-season and ready to dominate come training camp. It's time you commit to become relentless.

One time payment (USD) with instant & lifetime access!


Start training now

commit to becoming relentless.

let's take your game to the next level.

Elite lacrosse players don't leave their training to half-hazard guesswork. They have follow a structured game plan that they know is going to develop the attributes they need to thrive on the field.

It's time to get a game plan for getting bigger, stronger, and more dominant on the field.

The Size & Strength Program is the program get your training dialled in & get you ready to dominant  is the game plan designed to maximize your training to unlock elite speed & explosive power & transform you into a more elite player on the field.

Commit to become relentless with your training today.
One time payment (USD) with lifetime access & updates!


sign up & start training today


What exactly do I get with this program?

You’ll have instant access to: 
- Your 12 week program (36 workouts) with both a digital version and printable tracking version.
+ The Elite Speed for Lacrosse guide with 20+ speed workouts. 
+ The Relentless Anywhere Workout guide with 20+ at home workouts. 
+ The Complete Conditioning for Lacrosse Players guide with 25+ conditioning workouts. 
+ The Relentless Mobility & Maintenance Manual with foam rolling, mobility, and active recovery protocols.
+ The Peak Performance Nutrition for Lacrosse guide with 50+ pages of nutritional guidelines including hydration, game day, body composition (losing/gaining weight), and supplements. 

You’ll also get access to the support of our team and Coach Kyle along with any new upgrades or additions to the programs. We’re constantly looking to create new resources to help our players thrive, and once you’re in the Relentless community we truly want to fuel your success. 

Seems expensive, why should I invest in this vs just doing my own workouts?

Many players can train on their own, but the truth is that random training creates random results. Success demands structure. 

Relentless Lacrosse was built to take the guesswork out of lacrosse player’s training and give them the exact structure that’s been refined by thousands of players to be proven to translate to the ice. 

Working with a Strength Coach that understands the specific needs of lacrosse players can cost upwards of $150+ dollars per session or joining a 12 week group training program can easily cost over $2000.

With Relentless Lacrosse, you have access to the exact workouts that pros are paying thousands of dollars for under 10% of the cost.

What kind of exercises are included?

Admittedly, a lot of these exercises will be new for some of athletes.

This isn’t just a classic bodybuilding style workout where you’ll see 3 sets of squats and lunges. Relentless programs are loaded with integrative exercises that challenge you with unconventional movements. 

You’ll have a Youtube Playlist with demonstrations of each exercise in that days workout so that you’ll always know exactly what to do.

What kind of equipment do I need?

This program was designed to be performed with a super basic gym setup. We don't believe in big fancy gym setups or the latest equipment.

This program includes: dumbbells, cables/bands, barbells, kettlebells, and mini-bands. For any exercise that may require a specialized piece of equipment (trapbar/landmine/etc.) we've included alternative exercises guide, but 95% of gyms will have exactly what you need.

How do I access my programs?

Immediately after purchase you’ll have access to our members-only platform that contains all of your training programs and bonus resources. You’ll have lifetime access to this platform and will be able to come back any time to download your programs or get updated versions/new resources.

What if I’m not happy with the program or results?

We stand by our programs 100%. That’s why we offer a 100% satisfaction guarantee. Having seen thousands of players train with Relentless, we know lacrosse players who truly invest in this program and their training get results. But if you start this program and it’s not for you, just contact our team within 30 days and we’ll send you a full refund. 


Declan M.

Canton, OH | NCAA Division 1

This off-season was the most productive I've ever had. My speed has improved, I've gained some muscle, and my body feels fantastic (the mobility work is so clutch). I swear this is the first off-season it feels like I actually trained like a lacrosse player and I'm coming back at a whole new level. Can't wait to start this season and share some wins with you guys!

Daniel D.

New Haven, CT | NCAA Division 2

I've been loving this program Kyle! I had done mainly heavy lift style programs in the past, but getting on this has been a game changer. I love that it's a mix of strength, power, and functional work. I really feel like I'm not just training muscle groups but actually "connecting" things for the first time & can really feel it in my speed and shooting work.


Jersey City, NS| College (ACHA)

This off-season has been huge for my game. My Coach told me last year that I had to get stronger to play more aggressive - and so I made it the priority that this off-season I'd focus on strength & condition more. Finding this program has truly been incredible. I love that it wasn't just heavy lifts but exercises I knew would get me stronger and more powerful on the field. My coaches have said I'm playing more confident and finding more offensive opportunties & I really credit my off-season training with your guys' programs.

Jamie B.

Garden City, NY | NCAA Division 1

Hey Kyle, just wanted to share some thanks to you and the Relentless team! I used the relentless program to prepare for my first season of d1 lacrosse. I really wanted to get focused with my training and earn game time my freshman season. All the coaches have said how impressed they were with my game & I really credit it a lot to the work I put in this summer. I've played every game this season (they originally said I'd play half) and I'm top 5 in points. Can't say enough good things about Relentless & will be training again next off-season!

Lauren P.

Springfield, MA | Elite Juniors

Our team strength coach sent our WOMEN'S lacrosse team the exact program as the football team.. that when I knew I had to take my training into my own hands if I was gonna get ahead. Finding Relentless has been a god send! It's the first program I felt like is actually built for lax players. I'm already starting to notice little things on the field like faster cuts and cleaner dodges. Can't thank you guys enough!

Micheal S.

Avon, CT | Prep School

Hey Coach! Just wanted to give you an update.. I've started my first 3 game this season and feel incredible out there (after not getting much time last season). My coaches all say I'm a different player this year and way tougher to play against. I swear my power and speed are at a whole new level & I know it was my work in the gym with relentless!