Good point. I definitely wouldn’t plan to go as fast as sound, but human body probably would not like even 3x speed increase for a prolonged time. Let’s bend rules a bit and say your body could endure all that and you would not get bone, muscle, skin (blisters) problems. Your organs also would need to adapt, otherwise every time you start/stop moving at insane speed, it would be as if you would be in a car crash.

To not give too much advantage, your food consumption would have to increase to sustain all the energy needs, did not think about that as well.