Varies: There is no specific dangerous heart rate during exercise. How fast your heart beats with exercise depends on a number of factors, especially your conditioning. If you are healthy, a heart reate in the 170's or even higher may be ok and tolerated.
Motion sickness caused by video games, sometimes called simulator sickness, is caused when there is a disconnect between what your eyes are seeing and what your body is feeling.
You get motion sickness when there are conflicts among your senses. Say youâre on a ride at the fair, and itâs spinning you around and upside down. Your eyes see one thing, your muscles feel another, and your inner ears sense something else. Your brain canât take in all those mixed signals.