UAU! I was touched by your level of intimacy on this post. thank you so much for that.
I have found recently a video through @NightHawk999 and @Barry that might be interesting for you…
Among several delightful distinctions and the elements of water, fire and breath (air). In Tummo practice, which you can find about more here:
https://tulkulobsang.org/en/teachings/tummo
you have mental exercises, BREATHING exercises and physical exercises.
I know it’s a LONG video… and worth every second of it! I am listening to it now and taking notes. If you wish, I can share those with you, to make it more simple (and aligned with you reading better than listening). At the moment I am also writing an article:
“Eros, Sexuality and Dreams - cultivating sexual energy into lucid dreaming and real relationships”.
I will post it soon in that thread (of the first link in this message), which I think is in a more accessible language, understanding and practicality for modern times 