# @andrespreschel on Instagram

- **Type:** Video
- **Original URL:** https://www.instagram.com/p/DavneJ8vS-j
- **Gondola URL:** https://gondola.cc/posts/67886518-andrespreschel-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/61a6166caf.jpg
- **Posted:** 2026-07-13T19:09:01.000+00:00
- **Account Owner:** Andrés Preschel, BSc, MSc(c) | Health & Performance Coach (@andrespreschel) — https://gondola.cc/andrespreschel

## Caption

My latest obsession is adding glycine powder to my chamomile tea before bed. Puts me right into deep sleep.

Here’s my take as an exercise physiologist and biomedical neuroscientist 👇🏽

Glycine is an inhibitory neurotransmitter in the brainstem and spinal cord, so it quiets neural activity instead of knocking out or sedating you. 

It lowers your core body temperature by pulling heat out to your hands and feet, and that drop in core temp is one of the actual physiological triggers for sleep onset and deep slow-wave sleep (Bannai et al., 2012; Yamadera et al., 2007).

Chamomile works through a different but similar door. It’s rich in apigenin, which is a flavone that binds the same receptor site benzodiazepines target on your GABA-A receptors, nudging your nervous system toward calm (Viola et al., 1995).

Glycine is one of the few amino acids that tastes genuinely sweet, basically no calories, so you end up with a delicious tea that relaxes your nervous system within minutes.

And there’s something to say about the ritual of making tea, too. Boiling the water, mixing it all, and waiting for it to steep is a very pleasant way to slow down and change gears for the evening. Especially if you’re an entrepreneur or executive lol

And no, you shouldn’t feel groggy waking up. Unlike melatonin or pharmaceutical sedatives, glycine doesn’t cause next-day grogginess.

Hope this helps! 🫖

The more you #KnowYourPhysio…

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knowyourphysio

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