Because it’s dynamic — you start standing up, walk your hands out into a plank position, ... Here’s what happened when I did the inchworm and push-up exercise every day for a week 1.

One push-up variation that holds muscles under tension for longer is the walking plank push-up, so I tried it every day for one week. 70 reps might seem like a fair amount of volume.

Kneeling push-up: Start on all fours and walk hands forward so your spine is in a straight line from knees to head with hands below shoulders. Engage core, bend elbows, and lower your body down ...