I would think 2-3 since most movies are about an hour and a half long and that would give them some time to play video games or etc. after
Answer:
Because medicine has improved so much that other ways of death have become uncommon. With antibiotics infections can almost always ben cured. But obesity and hereditary traits can cause cardiovascular diseases which are harder to get rid of since there is no medication to just get rid of it like it would an infection.