Fitness Mastery: Hypertrophy, HIIT & Running Optimization

Comprehensive fitness involves a mix of strength training for hypertrophy, HIIT for metabolic health, and corrective exercises for postural alignment.

Upper Body Exercises

How to Tackle One of CrossFit's Hardest Exercises

Published Aug,31 2017 | By PJ Stahl

You might be strong, but are you muscle-up strong? This gymnastics-inspired CrossFit exercise is even harder than the pull-up and requires an insane amount of upper-body strength and core control.

PJ Stahl, MA, CSCS, is the PROJECT STEEL Program Creator. He is also a Reebok Master Trainer and ReebokONE Elite Ambassador. He utilizes over 20 years of experience in the industry, education in kinesiology, and numerous national certifications to provide elite level services. With this experience he has now opened LOCK BOX FITNESS & PERFORMANCE CENTER in Los Angeles. As a Co-Owner and Head Coach he has established a successful coaching system and has set the bar for the fitness industry.