"Eight out of ten people keep their cellphones on and close by as they sleep, and approximately half of us use our phones as an alarm clock."

https://www.reddit.com/r/AlternativeHealth/comments/3l38md/heres_how_your_mobile_device_is_impacting_your/

Zapped: Why Your Cell Phone Shouldn't Be Your Alarm Clock and 1,268 Other

www.bokus.com/bok/9780062014436/zapped/

'Using Your Phone as an Alarm? Here's Why You Should Stop'

www.apartmenttherapy.com/using-your-phone-as-an-alarm-heres-why-you-should-stop-207226

EMF decreasing melatonin:

https://www.reddit.com/r/Electromagnetics/comments/3lsvug/wiki_hormones_affected_by_emf/?ref=search_posts