Well. You might have already thought of this but you can eat healthy foods like greens. And you can also exercise like stretching or going out for a 30 minutes run every day. These two thing do help your emun system witch fights off diseases. Also helpes you not get them as easaly
It is recommended that you exercise within 55 to 85 percent of your maximum heart rate<span> for at least 20 to 30 minutes to get the best results from aerobic exercise</span>