When driving, sit firmly against the seat back. Follow normal sitting good posture habits. Adjust the head rest so that it supports the middle of your head. When walking, keep your head up, your shoulders back and walk tall. Get plenty of sleep.
Sleep is the bodies way of recharging itself.
Eat plenty of fresh fruits and vegetables, and drink plenty of water. Poor diet can cause fatigue and slow healing. Practice good posture. Making changes in your daily habits is not easy. Through practice you can make the changes necessary to prevent injury.