Now look at the right side of the above diagram, the sources. To keep you alive, your body needs two things, plain energy to burn in the form of carbs or fat and then amino acids in the form of protein. Your body has an amazing series of emergency backup system to keep you alive should food be scarce. Your stomach is the gas tank for ordinary use. Your bodyfat is the backup up generator to be turned on when food is scarce. And your muscles are the emergency backup, your body wont turn on this nuclear power plant to cannibalize muscle unless its a DIRE emergency. Energy can come from any of the three systems but amino acids can only come from the stomach or the muscles.
A: Honestly, you’re too old NOT to get started. The science shows that college-age kids don’t have to worry about hormone levels and muscle loss – getting in shape is easy for them. From your 30’s to 40’s and beyond, when hormones and metabolism start to change, if you don't eat the right food and get the right exercise, your muscles (and bone density) disintegrate faster with every passing year, while fat goes on easier. Age 35-55 is our biggest member demographic and more people are joining us after 55 than ever because that age group is finally discovering how crash diets accelerate aging while training and feeding the muscle reverses aging.