These 5 new spins on old ab workouts work you harder, so you can build muscle fa...
These 5 new spins on old ab workouts work you harder, so you can build muscle faster, says Jim Smith, C.S.C.S., cofounder of Diesel Crew.
5 New Ab Exercises | Fitbie
Upgrade your tired abs moves with these muscle-defining variations from Men's Health magazine. Learn how to perform these moves and more at... read more..
source:fitbie.msn.com
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