SO, YOU WANT to get strong and build muscle, but you don’t have a ton of time to dedicate to the gym. You can try the 5/3/1 ...

Here’s a breakdown of Williams’ two shoulder days. 1. Hold dumbbells in front of your thighs with an overhand grip. Pull your ...

How to do mountain climbers: Get into a high-plank position with your wrists directly under your shoulders. Keep your core ...

Join the SI Swimsuit model for an upper body session, which requires only a mat and a pair of light dumbbells.