It is one of the most powerful involuntary actions the human body can perform. But is a big sneeze a sign of illness, pollution or something else entirely?

A car backfires, and your shoulders jump. A shadow moves, and your eyes fly open before your brain catches up. That dramatic flash of white sclera around widened eyes feels automatic because it is.

Reflexology promotes relaxation — here's what happened to my sleep after trying it ...

Reflex bradycardia is a reflexive response from the autonomic nervous system that causes the heart rate to slow. Triggers may include submerging in cold water or physical pressure on certain body ...