SWEAT RX Magazine Jul/Aug 2013 issue | Page 80

training cros Hollow Rock A seemingly innocuous little exercise, the hollow rock is a staple of gymnastics conditioning and excruciatingly tough when performed correctly. TIP: The idea is to rock like a rocking chair with your arms extended overhead and legs out straight. There’s a flat spot that creates a visible “clunk” caused by weak contraction of the lower abs. Take the “clunk” out. The smoothness of your rocking speaks to your lower ab strength. 10 W W W. S W E AT R X M A G . C O M 76 july/august 2013 29.TrainingCrossfitMoves_SRX_JulyAug13.indd 76 7/9/13 9:12 PM