While sprinting, Hiro could feel his heart beating faster than usual. It was like the feeling of an adrenaline rush while being chased by a man-eating tiger.
Underneath his skin, his muscles twitched incessantly while the blood supply was higher than usual.
As impressive as Hiro's current form was, it was equally lethal. Rather there were more cons than pros. If he got tipped even a little, the outcome he'd suffer would be dangerous.
Just as Newton said: every action has an equal and opposite reaction, if Hiro got tipped even lightly, he'd suffer great consequences due to his acceleration.
It would be lethal enough to hospitalize him.
However, Hiro was prepared. He wasn't a fool. He had brought this out only after a careful analysis. But the part with Gvardiol was still uncertain.
If he messed up his timing, he'd get sent flying. It was a bit risky, but he was prepared.