Exposure to sunlight is really important because it has…

Exposure to sunlight is really important because it has certain effects which go beyond vitamin D. That's the first thing I want to point out. The way the hormones work, the time at which cortisol, or the stress hormone, is released, the time at which melatonin, or the sleep hormone, is released, the way insulin works in your body, whether you put on weight or not, all of this depends on your exposure to sunlight. This is what we call the circadian rhythm. The body needs to know that you're awake at this particular time for it to function according to a particular way. That's