Body Weight Strength
Training
Abs (90 Degree Crunch)
1.
Lie on the floor on your back, knees bent at
a 90 degree angle. Lift your
head and
shoulder blades slightly off the floor.
2. In a curling motion, slowly bring
your torso toward your knees. Hold for two
seconds and lower your torso back to the floor, knees at 90 degree angle.