Does your heart beat faster when you do a headstand?

Answer 1

No, and yes.

according to physics, Vertical motions is to be consider _ Zero work as long at the motions stays in the vertical line.

Basically The amount of energy used to stand up would be equivalent the same to do a headstand. The equal amount of energy would covert both ways in a zero work ratio.

However is your energy is used to go up and down against the vertical alignment , like doing headstand pushups your are doing work because your body itself is going against the plains of "normal motion" causing energy.

In lamen turns- being still vertical in a mirror shape doesn't incrase your heart rate but goign up and down does.