Ironically, the exercise he did to keep him fit, has caused his back injury.
The following exercises should cause you to feel a gentle stretch, but no pain.
According to recent studies, intense exercise can cause the brain to release endorphins.
Your exercises cause pain or are hard to do.
Both emotional stress and exercise may cause a temporary rise in blood pressure.
If a certain movement or exercise causes pain, stop and pay attention.
Too much exercise can also cause a woman to miss her period, a symptom known as amenorrhea.
May I point out to the good doctor the problems your exercise caused?
If an exercise ever causes you any pain you must stop immediately.