Why: This might be the best core exercise you're not ... your classic six-pack muscles), but it's so much more. MH fitness ...
Engages entire core, including deep abdominal muscles. Russian Twists: Works obliques and improves rotational strength.
Martin Rusch "The best way to approach abs workouts is to think holistically about your core and train 360-degrees around the core of your body, as opposed to thinking just about a six pack ...
explains what you'll really need to show off those six-pack abs. Produced by Kevin Reilly. Additional camera by Grace Raver and Will Wei. Special thanks to Michael Bultman and CrossFit NYC.