The physiological root cause is usually excess melatonin exposure at the wrong time or in the wrong amount, rather than melatonin directly “causing nightmares” or proving that someone is a slow metabolizer. Try this now: if you took melatonin and feel groggy, sit upright and take 6 slow breaths at about 5–6 breaths per minute … Read more
Nighttime blood pressure normally falls as the body shifts toward sleep, but this is driven by coordinated changes in autonomic activity, circadian timing, blood-vessel regulation, and body temperature—not by glycine alone. Try this for 60 seconds: make your bedroom comfortably cool, then take 5–6 slow, relaxed breaths per minute while keeping your shoulders and jaw … Read more
Evening anxiety is not reliably explained by “low GABA” or “high glutamate” alone; these neurotransmitters are part of a larger network that regulates arousal, attention, emotion, and sleep. Try this for 60 seconds: breathe slowly through your nose at about 5–6 relaxed breaths per minute, making each exhale slightly longer than the inhale. Keep the … Read more
Melatonin’s effects depend on dose, timing, receptor signaling, and circadian phase, but the claim that melatonin receptor down-regulation makes micro-doses inherently better than 5 mg or 10 mg tablets is not established; higher doses can simply produce more melatonin exposure than many people need, while the optimal dose varies by purpose. Try this for 60 … Read more
A brief rise in heart rate before sleep is not well established as a predictable “20-minute cortisol rebound”; it is more likely to reflect normal fluctuations between sleep-promoting and wake-promoting systems, with autonomic arousal, circadian timing, thoughts, temperature, and other factors potentially contributing. Try this for 60 seconds: lie comfortably, relax your jaw and shoulders, … Read more
The feeling of being exhausted but unable to settle into sleep is usually not explained by high adenosine alone; sleepiness depends on the interaction between sleep pressure, the circadian clock, alerting systems, and the brain’s current level of arousal. Try this for 60 seconds right now: breathe gently through your nose at about 5–6 relaxed … Read more