Retrieves, but does not remove, the head of the queue represented by this deque (in other words, the first element of this deque). This method differs from peek only in that it throws an exception if this deque is empty.
A Lack Of Water Is A Lack Of Brain Power. Led by Dr. Caroline Edmonds, researchers in the UK recently conducted a study showing that even mild dehydration has a negative effect on the brain's performance. Drinking water, the researchers found, can improve the brain's ability to complete tasks that require a rapid response.
water serves several major functions in your body from providing the fluid for your blood to cushioning your joints if you don t drink enough every day you can feel fatigued when you don t get enough water for a long time dehydration can develop this is a life threatening condition drinking too much water can be problematic however if it leads to the need to urinate frequently