Hi guys, I used to do some entry-level freediving when I was a kid. Well, now I'm 27, didn't train since then. I went to 25m swimming pool tonight and tried doing some laps underwater. I went for first 25m very calm and nice, turned, kicked the wall and begun doing another 25m. All fine, I reached end of the ramp on the bottom - 37.5m mark. Next thing I remember is kind of unreal. It felt like sleeping and being in some dream. My body was shaking, I didn't feel any pain, I didn't feel I needed to breath. It lasted for some time. Hard to describe, but it was very not coherent. Dreams are usually like that - you figure out you are somewhere and you have no idea how you managed to get there and what actually happens. That's how it felt, no anchor to reality. My subconsciousness somehow pulled me out of water next to 50m wall and only after around 2-3 seconds I started getting back to real world. Then I felt I had little bit of water in my mouth or larynx, but only some, maybe table spoon or two. I couldn't just start breathing normally, something was not working. Like my throat was clogged. I was really calm, just taking my time slowly. 10-15 seconds later it was ok. Whole thing was very weird. Shaking was kind of uncomortable, but not painful. I think it wasn't my diaphragm shaking, but legs and arms. I don't remember swimming last 12.5m. Is that how blackout feels?