The better question is: how long should you hold a plank? So, what does that mean for ... create a wider center of gravity. Lift your left hand and bring it to your right shoulder.

Work smarter, not harder. You may have already incorporated that mentality into your training routine, subbing unfocused, ...

So, how long do you need to hold a plank ... Sit-ups, on the other hand, engage corresponding muscles (hips, lower back) a bit more than crunches, but not as much as a plank would.

The better question is: how long should you hold a plank? So, what does that mean for ... create a wider center of gravity. Lift your left hand and bring it to your right shoulder.