I just heard about this the other day from a doctor. Also, old literature refers to the first and second sleeps of the night. Modern working hours when the agricultural era ended forced people to cram in sleep in one session.
The best DIY projects & DIY ideas and tutorials: sewing, paper craft, DIY. Ideas About DIY Life Hacks & Crafts 2017 / 2018 - Line a pathway with rocks painted in glow in the dark paint (Rust-Oleum Glow). It will charge durin