Creations

Do you do crunches?

An exercise scientist explains why you shouldn’t do sit-ups or crunches:
https://www.facebook.com/techinsider/videos/853081664890191/

Besides push ups, crunches are the one type of exercise that I can do conveniently right out of bed.

Any thoughts on this? How about hanging leg crunches, do you think this makes up for not doing crunches?