Sleep
8 evidence-based guides on sleep — backed by clinical research and scored in our catalog.
Magnesium Glycinate vs Citrate vs Oxide: Which Form Actually Absorbs?
Glycinate (80% absorbed) vs citrate (50%) vs oxide (4%) — with elemental-dose math, side effects, and picks for sleep, constipation, and cognition.
Best Magnesium Supplements 2026, Ranked by Clinical Evidence
Learn which magnesium form actually matches your goal — glycinate, threonate, citrate and more — and see the top-scored magnesium products in our catalog.
Best Sleep Supplement Protocol 2026: Clinical Evidence Stack
Build a cheap, non-habit-forming sleep stack using magnesium glycinate, L-theanine, and glycine — three compounds with the strongest clinical trial support.
8 Signs of Magnesium Deficiency – 2026 Guide
Muscle cramps, twitching eyelids, and poor sleep may signal low magnesium. Learn all 8 signs, why standard blood tests miss it, and how to fix it.
Best Time to Take Magnesium: The Timing Science (2026)
Morning, evening, or with food — when you take magnesium matters more than you think. Form-specific timing rules backed by clinical research.
How to Choose a Mattress: What the Evidence Says About Firmness and Back Pain
Medium-firm beat firm in a randomised back-pain trial. What foam, latex, hybrid and innerspring actually change, how to use a trial period, and which claims are marketing.
Dark, Quiet, Cool: What the Evidence Says About Your Sleep Environment
Light at night, earplugs vs white noise, bedroom temperature, and raising the bed for night-time reflux — plus the sleep problems no gear can fix, from insomnia to sleep apnoea.
Weighted Blankets: What the Trials Show for Sleep and Anxiety
One striking insomnia trial, one negative trial in autistic children, and a blinding problem in all of them. What weight to choose, the heat trade-off, and who should never use one.