Kali Muscle drops in on the Strength Cartel crew for a push-up competition that turns into a high-energy display of endurance and grit. What starts as a challenge quickly becomes a show of mutual ...

In this intense leg day routine, Kali Muscle puts his strength and endurance to the test with high-volume squats, lunges, and ...

The Minimal Dose for Strength Most athletes believe that if they aren't working out at the gym five days a week, their strength will disappear. The truth? Scien ...