Wouldn't be the perception of things being easier/ performance improvement just another effect of having your brain soaked in chemicals? I have been in life an

Wouldn't be the perception of things being easier/ performance improvement just another effect of having your brain soaked in chemicals? I have been in life and death situations, once dragged by strong currents deep into the sea while swimming alone. I also moutain bike. For me both states of mind are very different. When doing sports there's definitely adrenaline but there is also a lot of confidence in what you are doing coming from knowledge, experience and having the right gear. When I was trying to swim back to my campsite it was pure adrenaline without any experience or knowledge on how to swim in those conditions. And the possibility of death was so intense and real that I entered a mode where I became my own guide, repeating myself to stay calm, save energy and try to swim sideways to get out of the area with the rip currents (that was totally made up, but maybe worked). I ended up getting out of the water a mile from my campsite. There's no mountain I could hit today that could match that experience.