Kicking the Crud

If you are already sick - Vitamin C, recommended dose on the bottle twice a day, Zinc, Vitamin D + K, Inner Defense capsule (Young Living), ImmuPower (YL Essential Oil) on the bottom of the feet as often as possible, & diffuse Thieves Essential Oil in your room and in the house. Also consider drinking 2oz of Ningxia Red daily. Reduce sugar and lay off the coffee as well.
If you aren't sick, make sure and take Vitamin C & D daily, and possibly Zinc too for added benefit of catching anything early. Diffuse and apply Thieves daily. Avoid sugar and eat clean whole foods as much as possible.