Hart Attack

Chris Denison:

 

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To accomplish this amazing contortion, its a prerequisite to be good at supermen seat grabs. 
Working up to it: When you take off from your jump, pulll your legs and hand off, grab the grab hole (just like normal) but don't kick your body and legs far behind (or above) the bike. This time, make a motion where your head stays low and forward on the bike, not any further back than the middle of the seat. Work on getting comfortable with moving your head and torso down and use your hand not to extend and push the bike away, but to pullyour body up on the bike. When you get this down good, work on curving your legs behind your back a little. This will familiarize your body with the feeling of being inverted. Once your can do these motions, your hart attacks will look like funny, contorted supermen seat grabs (see pic above). They won't be full out extended. To work on extension, you must push off with your hand when in the position described above. As you push with your hand, straiten your torso and kick those legs high above your head. While extending your arm, its a good idea to pull yourself forward at the same time to keep your body above the center of the bike, that way you won't drift back into a standard superman seat grab. To get back on the bike, you must pull your legs down while rotating your torso, and when the legs are parallel with the bike you must pull your legs back on with the grab hand, just as in a superman seat grab.