This is something that happened to me in the days when I went climbing. A friend and I were climbing in France, and I decided not to attempt a particular climb without being roped in from the top.
The reason was that the very first foothold was a tiny nubbin of rock, smaller than the tip of my little finger.
If my foot slipped off that I would crash onto the small boulders that were littered all ever the ground.
That nubbin of rock was only a metre or two off the ground, so if I slipped off that I could just see me falling on the edge of a boulder and twisting my ankle.
So I decided to climb an easier bolted route to the side of this particular hard route. The idea was that I would clip in at the top of the harder route and let myself down and then climb that route roped in.
When I got to the top, I made a mistake and I unclipped in the wrong direction. I should have first reversed and down-climbed and then unclipped starting at the bottom until I had worked my way up. But I didn’t.
I started unclipping from the top and that meant that when I was at the last clip I was on the end of a thirty-foot length of rope. When I unclipped that I would swing like pendulum. And I did.
I don’t know what I was expecting, but the swing was huge and fast. I was swinging, high on adrenalin.
After that I don’t recall anything of the harder route except that very first foothold on the nubbin of rock. It was so easy and I just climbed so fast and so easily.
I remember that the walk back through the trees and down to the campsite was breezy and easy. I was laughing and smiling and just happy and interested in everything.
Back at the campsite I showered and dived off the edge of the pool and started swimming. The adrenalin was still pumping and my arms and legs felt no resistance in the water. I could see fluffy clouds reflected in the water and I was swimming through and on them.
It was truly like swimming absolutely effortlessly through fluffy clouds.