How often do we hear this? How often do we say it? I remember being dead tired as a teen. Also, there is the extreme tiredness a new mommy feels from night after night of interrupted sleep. Sometimes, insomnia can make day drag in a foggy state. Then there are the times, we do it ourselves, knowing we are burning both ends of the candle, but pushing our bodies beyond the limits of matter. Fatigue has been linked to anger, irrational thoughts, poor decision making, hormone imbalance, (including leptin, which tells your body it is time to Stop eating), depression and anxiety. Not to mention its link with 56,000 car crashes every year with 40,000 injuries and 1,550 deaths.