4 loops of Khan Black 1: an hour in bed, she said it felt different and the best ever

I've done 4 full loops of KB1. Last night had sex with my new lover for an hour and didn't release — was just tired so I stopped. She said this time it felt different and the best one ever. My throb felt more powerful and she could feel it too. I could just stay deep and throb, making her quiver in the process. Some of the guys mentioned it activating previously run subs that were dormant. That's how I felt — it reactivated Sex Mastery that I haven't run in almost a year. I was just effortlessly changing positions. Still hard after as well. I'm mid-40s by the way, no TRT — just herbal supplements.