For most of us, planks don't typically last a long time. Your core starts shaking, your arms start wobbling, your abs are on fire — about 30 seconds in, your body is yelling at you to wrap this up.

Set a timer, drop into a forearm plank, and see where your core lands.

You’ve seen those viral social media challenges. Someone holding a plank for what seems like an eternity, face contorted in agony, body trembling, all while the clock ticks mercilessly onward. Maybe ...

The plank is one of the most well-known fitness exercises. The forearm plank requires no equipment, strengthens the core, and ...