WELLNESS TIP: LIGHT THERAPY CAN BEAT JET LAG AND MANAGE SLEEP SCHEDULE: Using light therapy will affect the production of melatonin in the body. Melatonin is a hormone produced by the body during darkness and is broken down during daylight – and its presence or absence effectively causes you to feel sleepy in the dark and awake in the sunshine. An intense application of light is thought to ‘reset’ the body clock by suppressing the production of melatonin – thereby keeping you awake during the daytime at your destination. Some people have been able to avoid, or at least minimize the effects of, jet lag by using light therapy – so why not try it?" - Light therapy | Four Alternative Ways To Beat Jet Lag - Yahoo She Philippines