Another thing you can try is to eat healthy foods. You don't have to dramatically change your diet if you think it's good or don't feel like it. Instead, a little amount of any of these options listed can make you feel healthier already.

 One example would be a citrus.  Oranges, limes, lemons, and even grapefruits are all considered citrus. They can help with your immune system, since they have a lot of Vitamin C and fiber.

The last example is to eat foods with a bunch of protein. Protein can help improve your muscle strength. The types of foods that can help include eggs, chicken, beans, and even bananas!