Watch detailed HD bent knee abdominal curl ups exercise demonstration video. For over 50 pre-designed workouts you can bring straight to the gym, click HERE.
Updated: April 4th, 2015
Bent Knee Abdominal Curl Ups Video
Watch detailed HD bent knee abdominal curl ups exercise demonstration video. For over 50 pre-designed workouts you can bring straight to the gym, click HERE.
Updated: April 4th, 2015
