Get my 9-Minute Kettlebell & Bodyweight Challenge FREE here: http://www.9MinuteChallenge.com

Wouldst thou like to increase thy strength in 60 seconds or less?

Of course you would.

Try out the back pressure crunch and watch as your strength goes through the roof: #1 plank progression for rock-hard abs | Aleks "The Hebrew Hammer" Salkin - YouTube