#4 Planks
Plank is a superb home workout option in more ways than one, not just because they really give your core a good work up in order for you to get that six pack you so admire. Besides, they have an extremely low injury rate, unlike crunches. So get planking asap.
Step 1: Take a push up stance, but on your forearms rather than your hands.
Step 2: Ensure that your back is straight and work your way down.
Step 3: Hold your position by squeezing your core before reverting to your original stance.
Important Tip: Begin with 6 sets of 10-seconds.
Next Up: Side Planks
Edited by Raunak J