Here is how you do it: Assume standard side plank position, by resting your forearm on the floor. Using your core for support, lift your body off the floor. Your spine should form a straight line from head to heels.
|Good Plank Position|
While holding a good plank position (don't let that hip sag), bring your knee up towards your head and bring your elbow to meet the knee. Crunch those ABS! For a fun variation alternate bringing the elbow to the inside of the knee and then the outside.
|Wow is that my six pack showing? (Please say yes!?!)|
What shall this move be called? Plank Crunchers? Plank with a side elbow twist?