This story is part of 12 Days of Tips, helping you make the most of your tech, home and health during the holiday season.

Quality rest helps us promote a healthier body and mind as it can affect mood, knowledge retention, your immune system, muscle tissue repair, the list goes on.

When you've tried every sleep remedy in the book, from nighttime yoga to melatonin, and you can't seem to knock out at night, this supplement might do the trick.

Although there's limited research, the small studies performed yield positive results that show GABA may be worth a try if you're unable to fall asleep.

It's an inhibitory neurotransmitter that blocks chemical signals in the central nervous system and reduces brain activity.

Taken alone or with other natural sleep aids, GABA supplements help address anxiety, stress and an overactive brain, three main offenders that make it difficult to fall asleep.