If exercise feels harder than it should, chronic stress may be working against you. Learn how to regulate your physiology so ...

Working out doesn't just build muscle but, in later life, helps maintain a powerful cellular machine that repairs damaged ...

Stop wasting time with stagnant workouts and unlock the proven biological trigger that forces your muscles to grow stronger, ...

Skeletal muscle is the type of muscle that controls movement. Problems with these muscles can be minor, life-threatening, or ongoing problems that make it hard to perform basic daily activities.