I would like to suggest your friend to learn self hypnosis technique to improve sleep quality. He/She can also consult the Naturopathic Practitioner for improving her sleep quality.


Deepening Sleep by Hypnotic Suggestion
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4015388/
Results demonstrate the effectiveness of hypnotic suggestions to specifically increase the amount and duration of slow wave sleep (SWS) in a midday nap using objective measures of sleep in young, healthy, suggestible females. Hypnotic suggestions might be a successful tool with a lower risk of adverse side effects than pharmacological treatments to extend SWS also in clinical and elderly populations.

This post has been edited by zeropoint9: Feb 18 2015, 02:02 AM