The solution to your "moods", lack of concentration, and fatigue could be a simple as a glass or bottle of water! That's right! According to researchers at the University of Connecticut in Storrs say that not drinking enough water is one of the biggest culprits. They found that even mild dehydration, the kind where you don't even realize you are thirsty yet, can significantly affect women's moods, concentration, and levels of fatigue. Having a busy day? Don't neglect the water cooler, water bottle, etc.