Training your arm muscles isn't super complicated ... Grab a dumbbell, wrapping your thumbs around each other touching one side of the bell. Lie back on a bench, placing your head near the ...

Training your arm muscles isn't super complicated ... Squeeze one biceps hard, while performing a curl rep on the other side. Repeat on the other side. Why: Shift your perspective (and your ...

A pulled (or strained) muscle could take a few days to feel better. Severe injury could take weeks to months. Find out what ...