Toe Touches

 If you often do traditional crunches, try bumping up the intensity with toe touches. The challenge here is trying not to bend your knees to fully target your upper abs. Follow these easy steps:

• Lie on your back on the floor. Raise your arms to your ears or directly above your chest.
• Without lifting your hips from the ground, raise your legs, holding them there throughout the set.
• Use your abs to slowly curl your shoulders off the ground, bringing your fingertips to your toes. Now slowly lower your shoulders to the ground, pausing at the starting position to complete one rep. Don't use your neck as momentum to make the motion.
• Do 20 reps.