Diagonal sit ups work the obliques, or the muscles on the side of the stomach. Learn the proper technique for doing diagonal sit ups in this free core training workout video.
Expert: Kirk Vickers
Bio: Kirk Vickers is the owner of TRIAD Performance Gym and Training Center. He was twice voted as one of Americas Top 100 Trainers by Mens Journal Magazine.
Filmmaker: Travis Waack
I would say 2 sets of 12 or 20 like most
doobie1971 3 months ago
It would be useful to tell the viewer how many reps to do.
hootsmeister 9 months ago
nice!!!!!!!!!!!!!!!!!
fallenangelkiara 3 years ago