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 ...

YOU PROBABLY THINK you know how to do a plank. The ab training staple is relatively simple, after all—boiled down to the basics, all you need to do is get down on the ground and hold in place.

Fitness experts are pushing back against the social media trend of extreme plank holds, highlighting that proper form and consistency are more effective than focusing solely on duration. Age-based ...