This tip may seem basic, but it is one of the most crucial steps to a healthy life. Staying hydrated leads to healthy physical and mental functioning. Drinking lots of water during the day is also key to keeping yourself fit from the inside out. To avoid dehydration, it is best to carry a water bottle as a reminder. Hydrating yourself is also crucial to weight loss or maintenance because it not only reduces the feeling of hunger but also helps you eat less during meal times.