Try to keep distractions at a minimum. Physical activity is needed to keep a person strong and flexible for quick reactions that are needed while driving. Since medication can impair driving, avoid driving when you first start taking a new mediation, because its side effects can worsen after the first few days. If any medication makes you feel sleepy or disoriented, don't drive. Following general safety advice can reduce your chances of being killed or injured in a bicycle crash.
Most deaths related to bicycle falls and collisions involve head injuries.