Most of us have some level of fatigue and I can't think of anybody who has not at some point in their life, missed a night of sleep for one reason or another. The problem with that is that when we extend interrupted sleep pattern for long periods of time, we can end up doing some real damage to a lot of different physiological systems in the body. Stress plays a big role in this. Because when we experience chronic stress over long periods of time a can bleed from just a bad night's sleep here and there, into chronic insomnia and long term sleep deprivation and we know that over time. Sleep deprivation can actually become another cause of elevated stress levels.