Sleep
Sleep onset, depth, recovery
Sleep isn't passive — it's an active, staged process the brain has to switch into, and the switch is chemical. Magnesium and glycine both calm the nervous system and nudge core body temperature down, the physiological cue for sleep onset; glycine specifically improves slow-wave (deep) sleep quality. Vitamin B6 is the cofactor that converts these precursors into the inhibitory neurotransmitters (GABA, and serotonin → melatonin) that hold sleep through the night. Low magnesium is one of the most common reversible causes of restless, fragmented sleep.
How your supplements + diet cover this system right now — the nutrients feeding it, where the gaps are, and your own lab readouts.
The load-bearing nutrients — if these are deficient, this system shows symptoms first. Click any to see daily targets, top food sources, and supplements that supply it.
Lab markers that report on this system’s health.
Save a lab session under My Journey → Biomarkers to see your own values for these.
Where the biochemistry happens for this system.
Systems that share a load-bearing nutrient with this one.