When im dozing and then wake up after 15-20 mins at night or when i wake up from a nap my heart feels like its racing for about 3 mins and then regulates. Its a fast shallow beat, not pounding. It freaks me out so much thay i hate to take naps. It makes me tense up. Ive experienced It for years off and on and no dr has ever been able to explain what it could be. I dont know if its anxiety related or what. Im 25 and have had palpitations and weird heartbeats since im a teenager and all my diagnosis have been benign. Has anyone experienced this fast heartbeat after a nap? Another weird thing is if i wake up after dozing off for a few minites before bed my vision turns to red tint for a couple minutes like all the white walls look red and its not the lighting in the room and there's nothing wrong with my eyes. Its so weird and scary. I feel so weird because no one ever understands my symptoms.