Staying hydrated keeps your memory sharp and your mood stable. It also helps keep your body cool (by sweating) during hot summer months. The good news is that you don’t just have to drink water. You can eat it, too: in addition to delivering skin-protecting lycopene, watermelon is 92 per cent water (hence the name). Another boonIJ Research shows that eating foods that are full of water helps keep you satisfied on fewer calories. (Interestingly enough, drinking water alongside foods doesn’t have the same effect