I keep getting a adrenalin rush type feeling just randomoly when doing normal day to day activities. im not anxious or anything.what could cause this?

Caffeine? Meds?: Caffeine and some meds, including supplements, as well as rec. drugs can cause brief feelings that could feel like a rush. A rush is a nonspecific feeling, what do you mean by it? A tingling? alertness? feel hot or cold or shaky? Details are important to help. If the symptoms are brief and not frequent and you fine the rest of the time, see if you can notice when and why it occurs and see doc.