I could, but I’d leave something very valuable out I fear, especially on the chemical front, so please refer to these articles that cover it well.
In short, “Subspace is a state that submissives can reach during an intense scene with their Dominant partner.“
Sub drop is what happens to your body after you’ve drained your brain of all the hormones and chemicals that it releases during the scene or session.
A third and very important piece to this puzzle is Aftercare , which is the physical and emotional tending to the submissive that needs to take place after sub drop occurs. This can be read in the sub drop link.
There is science in BDSM. You should know it before you venture into this world and be responsible with it. People’s bodies and emotions are in play here. You can fuck somebody up or you can develop a bond that is irreplaceable. Subs need to be smart who they give their submission to just as Doms need to be responsible in how they behave.