About 2 years into my journey, not much progress since i started. Last session i decided instead of using kegels firmly to just barely squeeze them and relax my butt. I also was watching lesbian porn but mostly just for the audio. Rubbing my nipples gently as well.
Thats when i felt a build up. My heart started racing and all of a sudden my head felt like it was spinning around and that lasted about a minute then stopped.
I dont know if thats a normal sign but ill take it over nothing lol
Source: https://www.reddit.com/r/aneros/comments/lwcvn4/had_a_breakthrough_last_session/
The heart racing and head spinning is definitely a good sign. Next time you get there, try to relax through it and enjoy it and you might find that it lasts even longer or turns into something more.