Badass Muscle isn’t just another fitness app—it’s your blueprint for real results. Designed by elite trainer Matt Cook, our programs adapt to your fitness level, whether you’re a beginner, an intermediate lifter, or an advanced athlete.
Muscle Gain, Fat Loss, Strength Training, Home Workouts, and Flexibility Programs.
Gym, home, or travel-friendly workouts with little to no equipment.
Choose from a variety of structured programs designed for different goals and fitness levels
Stay on track with PRs, workout logs, and calorie tracking.
Stay motivated with milestone tracking, and streaks.
Create your account and get started.
You’ll get a welcome email with a link to download the
app and activate your account.
Pick from an entire library of training programs
tailored to your goals—muscle gain, fat loss, strength,
mobility, and more. Stay accountable and get results!
DOC30 Fit—short for Duration of Contraction-30 seconds—is a concept created by Matt Cook to maximize time under tension, range of motion, fat loss and muscle growth. This approach focuses on keeping your muscles working for at least 30 seconds during each set, using custom angles and techniques to make every rep count.
The secret? DOC30 taps into your body’s natural mechanics to trigger deeper muscle activation, release tension in the fascia, and improve flexibility. This opens the door to serious muscle growth and better overall performance—without the usual wear and tear.
Simply put, DOC30 Fit helps you break past genetic limits to achieve stronger, more defined muscles, better flexibility, healthier joints, and a faster metabolism. It’s not just another workout plan—it’s the next level of fitness.
Matt Cook, founder and President of DOC30 FIT and Badass Muscle, is a respected leader in fitness, health, and bodybuilding. Growing up in the scenic surroundings of Silver City, NM, he developed a love for the outdoors that fueled his active lifestyle. As a former NCAA wrestler, professional strongman, All-American powerlifter, and national-level bodybuilder, Matt’s experience and expertise have made him one of the most innovative and versatile fitness professionals in the industry.
With over 20 years of experience training clients, working with top industry experts, and mastering advanced techniques in training, nutrition, and supplementation, Matt has developed a unique approach that delivers real results. Known for his “out of the box” methods, Matt has become a go-to coach for professional athletes, celebrities, and everyday clients alike. His BAM program focuses on effective training and nutrition strategies designed to transform your body while keeping your health and well-being a top priority.