Magnesium helps activate your parasympathetic nervous system (the part of your nervous system that helps you relax). With your body in a relaxed state, it can help you fall asleep faster. Studies have shown that taking a magnesium supplement directly correlates to higher concentrations of the naturally occurring hormones that contribute to deeper and more restorative sleep like melatonin and serum renin. L-theanine is an amino acid that is found in tea leaves. It supports relaxation and helps reduce anxiety by its effect on the brain. *