Everyone's body will respond differently to exercise. Experts say muscles indeed provide benefits but they are not an indication of overall fitness.

Why? Supinated curls (palms up) enhance bicep peak, while hammer curls add thickness and overall arm strength. Combining the two creates a powerful sequence for total arm development. How?

Curl the weight up while keeping your elbows in place. This move gives you that solid peak on your biceps. Yep, chin-ups are not just for your back. Grab the bar with an underhand grip and pull ...