L-Sits Are an Amazing But Brutally Challenging Way to Build Core Strength

The L-Sit is the motherlode of core exercises, and requires a combination of strength, flexibility, and control in your arms, shoulders, abs, back, and legs. They’re tough, and require some working up to, but they’re oh so good for you. Source: L-Sits Are an Amazing But Brutally Challenging Way to Build Core Strength   Floor…