Let's talk shoulders. Yes, that part of our body that helps us lift weights, give hugs, and rock that tank top with pride.

A personal trainer investigated what happens when you do 100 dumbbell reverse flyes every day for one week. Here's her ...

Sit on the bench with a dumbbell in ... (2) The rear delts are a tiny muscle group, but ignoring them can leave your shoulders lopsided, slouching your posture, and increasing the risk of injury. Bent ...