The answer is sweat glands, not sweet glands :)
Pretty much all the other answers don't come even close for consideration. Small intestines have no way of excreting salts and water outside our body and neither do adrenal glands (these are resposible for the release of different hormones).
Someone with a paranoid personality disorder is likely to exhibit behavior marked by a pattern of distrust and suspicion of others.
Photoplethysmography is used to track of heart rate during a workout
