A good but hard to do core strength builder(Pls read)

• Simon Dean

  4 Jul 06, 17:28

  
  
  i can only do 8-10 without weights its a hamstring and back killer.I got abs from doing this as well, its more superior than your crunch.
  
  This, squat and deadlift is for my core strength.
• Simon Dean

  4 Jul 06, 17:30

  Another simpler version is just to assume a pull-up position and kick your legs infront until it is parallel to the ground(dont have to do it to your face)