The SleepMetric Blog

Sleep Science,
Decoded and Applied

Evidence-based articles covering sleep engineering, wearable data, and biohacking protocols. New content published weekly — no fluff, no wellness trends.

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Latest Articles
What does sleep score mean — wearable sleep score explained
Health Data Decoded What Does Sleep Score Mean? (Oura, Whoop, Garmin, Apple Watch)

Your ring says 86. Your friend’s wrist strap says 71. You both feel exactly the same this morning. So what does sleep...

Jul 5, 2026 6 min read →
Wake up at 3 am and can't go back to sleep — causes and fixes
Sleep Engineering Wake Up at 3 AM and Can’t Go Back to Sleep? Here’s What Your Body Is Telling You

It’s 3:07 a.m. Again. You didn’t set an alarm, nothing woke you, and yet here you are — wide awake, mind spinning,...

Jul 5, 2026 7 min read →
Is 500 mg of magnesium too much — magnesium dosage chart for sleep
Biohacker Brief Is 500 mg of Magnesium Too Much? What the Science Actually Says

You grab two magnesium capsules before bed — 250 mg each. That’s 500 mg. Perfectly normal, right? It depends. If you’ve been...

Jul 5, 2026 7 min read →

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