Brain "Muscle"

For years the brain has been compared to muscles (although it is not composed of muscle tissue). Muscles, when overexercised, become depleted. In that sense the brain is like a muscle. When depeleted, the brain becomes less effective. It can be important to understand this if you have a major decision to make. Try to make that major decision with a fresh brain. If you've just made a series of minor decisions, or needed to exercise self-control about something, your brain may be somewhat depleted and the choice you make about the major decision may be less than desirable.