There are many reasons to eat pineapple every day. One of them is because it helps you increase your water intake. Pineapples make a wonderful addition to smoothies or fruit salad, but I love to chop them up and use them to make sour and sweet chicken. They are always great on their own too. Pineapple is around 85% water, so it’s a tangy and sweet way to help increase your everyday water intake.