Human Brain Structure. The human brain is comprised of a number of different regions. Each of these regions are vitally important with highly specialized functions. The central part of the brain includes the brain stem and the midbrain. The function of the midbrain and has been largely preserved over years of evolution.
Get over jet lag. When you travel, you can take melatonin to help with jet lag, which is daytime fatigue that occurs when changing time zones. The first night you arrive at your destination, you can take 0.5 to 5 mg of melatonin. Taking it can help you sleep and reset your sleeping patterns to match the new time zone you traveled to.
Melatonin dosage for jet lag: Adults may take doses between 0.5 to 5mg at least 1 hour prior to bedtime after arriving at the final destination. An alternative method involves taking doses 1 to 5mg at least one hour prior to bedtime for up to 2 days before departure and for 2 to 3 days after arriving at the final destination.