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.
Motion sickness is a feeling of queasiness or nausea caused by moving in a car, bus, boat, or plane. Intestinal ileus is a condition of the intestinal muscles causing cramps and bloating, vomiting, gas, and more. Pancreatic cancer is typically asymptomatic until the cancer has advanced, making treatment difficult.