If you can’t sleep, try camping without your smartphone

If you’re one of the estimated 50 to 70 million Americans who have trouble sleeping, you might just want to treat yourself to a camping trip. New research shows that spending time outdoors — away from artificial light like your TV and cellphone — can reset your biological clock, helping you sleep longer.
Scientists have long known that using electronic devices like tables and phones at night is bad for sleep. Artificial light, in fact, suppresses the production of the hormone m