That's especially true when it comes to training your big arm muscles with biceps curls. The biceps are not overly complicated muscles. They have two jobs: flex the elbow, and twist (supinate ...

Welcome to Start TODAY. Sign up for our free Start TODAY newsletter to receive daily inspiration sent to your inbox — and join us on Instagram! Everybody’s done a bicep curl — it’s one of ...

The proximal region of the biceps femoris (BF) seems to be the most common site ... Objective To examine the region-specificity of BF muscle activity at different running speeds. Design Observational ...