Whether talking exercise or nutrition, there is not a one-size-fits-all solution for everyone. Before beginning any fitness program, it is important for you to know and understand your body.
Do you have movement limitations?
Do you have allergies or food sensitivities?
A preliminary fitness assessment by a certified personal trainer is a good place to start, but it doesn't stop there. Be sure to consult your physician or other health professional who is familiar with your health history before determining which fitness or nutrition regimen is right for you.
Listen to your body. Pain and fatigue are your body's way of telling you something is wrong, or that you have exceeded your physical capacity. Rest and recuperation are an important part of any fitness program.