Get a flat belly and rock-hard abs with the cross-body abs crunch

Source: https://in.lifestyle.yahoo.com/flat-belly-rock-hard-abs-071416456.html

Remember the exercise Farhan Akhtar was doing in Bhaag Milkha Bhaag on parallel bars in the rain which looked like crunches? What he was doing were actually cross-body crunches, though doing it on parallel bars might be a bit too much. Here’s an easier version you can do on the ground. Here’s how you do this exercise (just doing this one exercise won’t give you a body like Farhan’s): 

Step 1: Lie flat on the floor with your knees up. Place your hand behind your head; this will be your starting position.

Step 2: Now do the movement of a regular crunch but instead of going straight up, bring your right elbow and shoulder towards your left knee and touch it while you bring your left knee up. The trick is to bring your shoulder up towards your knee and not just the elbow which will help contract your abs.

Step 3: Return to the starting position and repeat with left elbow and right knee. Continue alternating movements for prescribed reps.