Probably my first answer would better fit some choice in between "All the time" and "Isolated incident." Maybe more like "Isolated incident(s)"? It's definitely happened to me more than once--and some of them I'm pretty positive were supernatural, some I'm not sure--but I wouldn't really classify it as "All the time," either, just because that gives me a mental image of constantly walking around looking like Montgomery Burns on radiation exposure and meds (i.e. surrounded by an ethereal green glow).