Of any calisthenics exercise, pull-ups are the most difficult to perform and see improvements without significant time and effort. Your pulling muscles (biceps, latissimus dorsi, rear deltoids, ...

What it's supposed to do: Train lats, upper back, and biceps. What it actually does: Unless you have very flexible shoulders, it's difficult to do correctly, so it can cause pinching in the shoulder ...

an ACE-certified personal trainer and NSCA-certified strength and conditioning specialist But people aren’t just doing bicep curls and weighted squats then calling it a day. Data from Google indicates ...