" It is your brain that decides to get you out of bed in the morning to exercise, to
give you a stronger, leaner body, or to cause you to hit the snooze button and
procrastinate your workout. It is your brain that pushes you away from the table telling
you that you have had enough, or that gives you permission to have the second bowl of
Rocky Road ice cream, making you look and feel like a blob. It is your brain that
manages the stress in your life and relaxes you so that you look vibrant, or, when left
unchecked, sends stress signals to the rest of your body and wrinkles your skin. And it is
your brain that turns away cigarettes, too much caffeine, and alcohol, helping you look
and feel healthy, or that gives you permission to smoke, to have that third cup of coffee,
or to drink that third glass of wine, thus making every system in your body look and feel
older.Your brain is the command and control center of your body. If you want a better
body, the first place to ALWAYS start is by having a better brain. "

― Daniel G. Amen , Change Your Brain, Change Your Body: Use Your Brain to Get and Keep the Body You Have Always Wanted