Evidence-based · No fluff
Optimize your biology.
Live longer. Think clearer.
Applying systems engineering to sleep optimization, supplementation, and cognitive performance. Every article is backed by peer-reviewed research — not wellness trends.
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Sleep
Ideal Sleep Temperature: What the Research Actually Says
Most people are sleeping in rooms that are too warm — and it's silently destroying their deep sleep. Here's what the research actually says.
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Sleep
Why You Wake Up Tired After 8 Hours (6 Science-Based Causes)
You slept 8 hours. You should feel rested. You don't. The problem isn't how long you slept — it's what happened while you were sleeping.
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Supplements
Best Magnesium for Sleep: The Evidence-Based Guide (2026)
Not all magnesium supplements improve sleep equally. A systems-level breakdown of the 4 forms that actually work — and the one most people are wasting money on.
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Sleep
Best Temperature for Sleep: Why 18°C (64°F) Improves Deep Sleep
Your body can't enter deep sleep without dropping its core temperature. Most people are sleeping 5–8°F warmer than optimal — and paying for it every morning.
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The three pillars
Sleep optimization
Temperature, light, timing and tracking protocols
Supplementation
What the trials actually show — and what to skip
Cognitive performance
Focus, memory and long-term brain health
Featured analysis
Magnesium Glycinate vs. Threonate: which one crosses the blood-brain barrier?
A systems-level breakdown of bioavailability, absorption kinetics, and evidence across 8 randomized trials. The most-read article on LongevityStack.
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RCT sources
12'
Read time
2026
Updated
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