Related but with no answers (at the time of this posting).
Several websites and "health tips" blogs recommend doing this after waking up to reduce sleepiness after waking up. (references, google search).
Is there any proof it works?
Related but with no answers (at the time of this posting).
Several websites and "health tips" blogs recommend doing this after waking up to reduce sleepiness after waking up. (references, google search).
Is there any proof it works?