I’m an otherwise healthy 21M. I usually sleep quite well and don’t wake up at night. I just woke up from what felt like a stinking heart attack. I was sleeping fine when all of the sudden I just started freaking out. My heart started going crazy and beating super weird, I was having trouble breathing and my back started to sweat perfusly. I thought I was dying, I sat up and was debating whether to try and get someone to help. It went away after a minute or so and my heart has calmed down a bit. I’m still pretty shaky though and super scared about what happened. Is it possible that this was a heart attack or just a panic attack? I do not recall having any dreams so I am unsure why it happened. Now I’m shaky and worries about going back to sleep. I’ve only slept for an hour or so thus far. Any help or advice is greatly appreciated thanks!