Now, those arms on your side have to take a slide up and down resistant to the wall for as much as 15 to 20 counts.
There are four great body strengthening exercises many do inside your house - situps, pressups, squats and back arches. https://Www.Evernote.com/shard/s499/sh/745c682d-c710-f5a1-c9a4-070ed871d7cf/GmxK7PeCtCl7-0qF7nHHhMCZGkv26EmELvFgH2VjZFW4rTtCRFF91Ys2Ng