How to do: 90-90 Crunches

Lie in a 90–90 position with your hip and legs. Place your hands behind your head and lift your shoulder blades up. Tap your feet up and down in the 90 angle position, holding a moment at the top. Lower and repeat!






Workout_trainer_icon Workout_trainer_logo_184x72

Follow along workouts & programs on your phone or tablet.

Wt_iphone_featured_68x134 Wt_ipad_do_workout_171x134

Download_app_store_ios Download_google_play_android_172x51



Join the millions of exercisers who use Workout Trainer to get fit, fast! Go PRO+ today to unlock the best mobile workout experience, plus all custom training programs!