HIIT 100 Challenge
Starts Now

Just six weeks from now, your clothes will fit better, your confidence will be higher, and you’ll have muscle definition you haven’t seen in years. That kind of transformation doesn’t happen by chance—but it can happen fast with HIIT 100.

HIIT 100 delivers serious results through a unique combination of old-school lifting, minimal rest, and high-intensity programming. It isn’t easy, but it’s worth it. Let’s go.

Stay On Track With the JS Mobile App

The Jim Stoppani Workout App keeps you dialed in every day of the challenge. Log every set, rep, and weight used to track your progress through all six weeks of HIIT 100.

6 Weeks to Total Transformation

HIIT 100 is a fat-loss program like no other. It combines weight training and HIIT cardio in a way that melts fat, boosts endurance, and builds muscle (and yes, you can build muscle on a fat loss plan).

In just six weeks, you’ll unlock a new level of intensity, conditioning, and focus.

This Exclusive Challenge Combines:

Visible results in only 6 weeks
Jim Stoppani Workout App to track workouts & progress
$25K in cash & prizes for top male and female transformations
Complete nutrition plan to maximize fat loss
Motivation & support from Dr. Stoppani & JYM Army
Exclusive JYM Supps discounts for peak performance

HIIT 100: The Fast Track to a Leaner, Fitter Body

HIIT 100 fuses three powerhouse training styles—HIIT, German Volume Training, and Hundreds—to deliver unmatched fat-burning results.

You’ll do 10 sets of 10 reps on key exercises, with rest periods shrinking each week until you’re doing 100 straight reps. Then, you’ll finish every workout with a brutal full-body move like kettlebell swings or dead-curl-presses.

Short rest. High volume. Maximum payoff.

They Took the Challenge—Now It's Your Turn

These transformations didn’t happen by chance. Every person you see here made a commitment, followed the plan, and showed up—even on the hard days.

You’ve got the same opportunity right now. Are you in?

Justin Schumacher
Men's Winner
SS8 Summer Shred 2025

Maria Rivera
Women's Winner
SS8 Summer Shred 2025

Amanda Day
Women's Winner
Shortcut to Shred 2025

Andrew King
Men's Winner
Shortcut to Shred 2025

Colby Smith
Men's Winner
Holiday Shred 2024

Layla Kosakowski
Women's Winner
Holiday Shred 2024

Rachel Elliott
Women's Winner
Summer Shred 2024

Joshua Cole
Men's Winner
New Years 2024

Julia Kennedy
Women's Winner
New Years 2024

Paul Boehm
Men's Winner
Holiday Shred 2023

Christina Land
Women's Winner
Holiday Shred 2023

Bart Lentini
Men's Winner
Summer Shred 2023

Selena Barbieri
Women's Winner
Summer Shred 2023

Nataly Henao
Women's Winner
New Years 2023

Andrew Sciarretta
Men's Winner
New Years 2023

Nathen Willard
Men's Winner
Holiday Shred 2022

Alma Farias
Women's Winner
Holiday Shred 2022

Sean Patrick Reilly
1st place
XS8 2022

Chris Peters
2nd place
XS8 2022

Jamal Robinson
Men's Winner
New Years 2022

Misty Ramirez
Women's Winner
New Years 2022

Derek Taylor
Men's Winner
Holiday Shred 2021

Sarah Grover
Women's Winner
Holiday Shred 2021

Ryan Paulsen
Men's Winner
Summer Shred 2021

Chad Pelham
Men's Winner
New Years 2021

Benjamin Gilbert
Men's Winner
Summer Shred 2020

Save Time With Trifecta Meal Delivery

Stay on track with 40% OFF Trifecta Nutrition’s clean, high-protein meals. Skip the prep and stay consistent with food that supports your goals.

Get 20% OFF the JYM Xtreme System Stack

Support your HIIT 100 transformation with 20% OFF the JYM Xtreme System Stack—featuring Pre JYM Plus, Post JYM (recovery matrix + fast carbs), Pro JYM, and SS8 Advanced Fat Burner. All research-backed formulas for results you can see and feel.

Picture Yourself in These Before & Afters

Six weeks from now, you can have your own transformation photo. Every JimStoppani.com success story started where you are now. They chose to show up, put in the work, and finish what they started. Now it’s your turn.