Hear that bump — or bang — in the night? Getting your recommended seven to nine hours of shuteye can come with complications for many, from obstructive sleep apnea to restless leg syndrome and more.

Have you ever been drifting off to sleep when suddenly you hear what sounds like a gunshot, a door slamming, or an explosion inside your head? You jolt awake, heart pounding, sit upright in bed, but ...