Avoid sports with potential head trauma or very heavy straining such as soccer, boxing, football, heavy weightlifting. Sports such as track, swimming, or bicycling are excellent and should be encouraged. Head trauma and heavy straining can precipitate retinal hemorrhages. They thin the blood and make bleeding easier. Stop them totally if bleeding, especially in the eyes or stomach, has occurred anywhere recently or is suspected.
Occasional use is acceptable.
It should also be stopped if there are signs of bleeding. The value of laser treament for fresh retinal hemorrhages is debatable. Check your blood pressure from time to time. Try to control it with diet and exercise if it is elevated. Your doctor will prescribe medications if necessary.