Tip of the day

Core Exercise: Prone Hand Stand Single-Leg Raise

Begin from a push-up balancing on the hands with fully extended arms and a stationary foot; Lift the opposite leg upward, keeping the toes pointing downward and the knee mostly straight; Continue the smooth, quick upward motion of the leg to near full rear extension. Return the leg back to the starting position and repeat 5-10 times on each leg. It's important to keep the body aligned in the same horizontal plane from the shoulder to the ankle of the stationary leg. Repeat 5-10 times on each leg. (It's easy to raise the hips too high on this exercise.)~ from Running Times website