I ditched sit-ups for this standing ab exercise for a week — here's what happened to my core
Place your hands by your temples, with your elbows pointing out to the side. Lift your left knee, and at the same time, bend ...
Tom's Guide1mon
I ditched planks for zombie sit-ups for a week — here's what happened to my core
Why not try mixing things up with a killer ab exercise that targets most of the muscles in your mid-section? The zombie sit-up isn’t ... taking far too many photos of her puppy.