Here are some of the benefits of mountain climbers, as well as how to do them correctly. Keeping a stable plank position while you propel your legs requires you to challenge a lot of different ...

Plank variations (mountain climbers, push-ups, and side planks)— 20 seconds on, 10 seconds rest, for 2 sets DAYS 16-30: Advanced plank variations (side planks, planks with shoulder taps ...