Bicycle crunching aims your upper and lower abs, as well as oblique (lateral muscles), making them very effective for pruning fat in the abdomen.
How to do this:
Lie on your back, lift your legs and bend your knees at 90 degrees.
Put your hands behind your head.
Give your right elbow to your left knee, correcting your right leg.
Switch the sides by bringing the left elbow to your right knee.
Continue alternation in cycling for 30 seconds to 1 minute.
This exercise helps to tan the core and burn calories.