Any good way to speed up my immune system?

Diet and exercise: Contrary to the claims in health food stores, there is no way to "boost your immune system." your immune system is great at what it does; there's nothing you can do to improve it. What you can do is provide it with the tools it needs to do its job - eat a healthy, nutritious diet, get adequate exercise, and keep your bmi under 25. Take care of your body, and your immune system will take care of you.