Medical background
Introduction
Chronic diseases are associated with altered metabolism, should it be cancer or diabetes.
Medical background
Insufficient physical activity
To recover, you need a moderate intensity exercise that your body is currently unable to do. You will tire quickly, so the results are bound to be slow.
Medical background
Rebooting your body
Elite athletes are kept fit by the systems in their muscles and the bacteria in their gut. The former can take up to six months to revive in you, but the right bacteria can be introduced into the gut.