1. The problem: Relying on HIIT for Muscle Growth If your sole fitness goal is muscle gain then HIIT isn’t for you. Sure, it’s great for burning fat and adding some definition at the same time, but it’s not best…


1. The problem: Relying on HIIT for Muscle Growth If your sole fitness goal is muscle gain then HIIT isn’t for you. Sure, it’s great for burning fat and adding some definition at the same time, but it’s not best…