The gelatin trick can also be adapted for evening use to promote relaxation and better sleep. Glycine, an amino acid abundant in gelatin, has been shown to support the nervous system and calm the body, helping people fall asleep more easily and enjoy deeper, more restorative rest. Mixing gelatin into warm milk, herbal tea, or even a light smoothie before bedtime can help the body recover overnight, aid tissue repair, and support metabolic processes, making it a valuable part of a nightly wellness routine. How to Use the Gelatin Trick