3. Use this special breathing technique
If you want an all-natural way to get tired, just breathe. Using a method developed by Dr. Andrew Weil, called the "4-7-8 breathe technique," you can relax your mind via your lungs. Basically, you exhale fully, count to four, inhale fully, count to seven, and and exhale slowly, counting to eight.
Dr. Weil calls it “a natural tranquilizer for the nervous system," and claims it helps you fall asleep because it rapidly fills your body with uber-relaxing waves of heightened oxygen.