http://www.konkura.com/ - compete with the best
How many continuous Headstand Crunches can you complete? This is an extremely difficult workout, which requires amazing balance, core strength and focus.
The winner of this fitness challenge is the person who completes the most continuous headstand crunches without before returning their feet to the floor.
Take the challenge at http://www.konkura.com/challenge/?uid=f3ba4e6b-83b7-4e9b-bd4b-e8ee655e1268&t=Headstand+Crunches