Having an efficient amount of magnesium helps with sleep, reports WebMD. Lacking magnesium can make it difficult to fall asleep, because magnesium is crucial in the operation of GABA receptors.
GABA receptors are throughout the entire nervous system and brain. They are calming neurotransmitters that allow thoughts to silence and anxiety to leave the body. GABA is essential to shutting off the brain.
For aid in sleeping, take 400 mg to 500 mg before going to bed, recommends HuffPost Lifestyle. Excellent sources of magnesium include almonds, green leafy vegetables, pumpkin seeds and wheat germ.