The correct answer should be gymnastics. While the other mentioned sports could help him too, gymnastics is the most comprehensive one because it involves almost every muscle in the body to do various exercises, whereas biking would increase his leg muscle fitness most, but would not do much for the rest of his body.
serves as a source of neural stem cells (NSCs) in the process of adult neurogenesis.
A seizure can be a sign of heart attack
Alcohol tolerance may lead to (or be a sign of) alcohol dependency
