Discover the ideal plank hold times after 50, plus the 30 and 60 second benchmarks that show your core is stronger than most.

The Turnover Chain? You mean the five-pound, 10-karat gold monstrosity Miami outfitted with orange and green sapphires and has become the breakout star of the college football season? How bourgeois.

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 ...

Planks and jumping jacks are perfectly fine workout moves. But if you combine the two together, you can actually get an even better total-body workout. Meet: the plank jack! Plank jacks involve ...