I ran into this same suggestion just a few months ago and after 30 years of shitty sleep finally learned how to relax and sleep. Can confirm it definitely work

I ran into this same suggestion just a few months ago and after 30 years of shitty sleep finally learned how to relax and sleep. Can confirm it definitely works - I'll intentionally get too cold, then pull up the blanket to warm up and fall asleep solid in moments.