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by helph67 708 days ago
Not books but hints. I use and recommend magnesium just before bed. "Magnesium: The Most Powerful Relaxation Mineral Available" https://www.huffpost.com/entry/magnesium-the-most-powerf_b_4...

From 2017 "Israeli firm 2breathe has developed a smart sensor and complementary app to help those who have difficulty nodding off" https://geeknewscentral.com/?s=2breathe