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.
Drinking Water Helps You Lose More Weight, Study Finds. Drinking 16 ounces before meals leads to more weight loss, a new study shows. Chug a couple glasses of water before eating a meal, and you may eat less without even trying.