I think horny fedi should have a discussion on how much sex is too much sex.
Freaky day every x days? daily? limitations change a lot based on that.

Like, 5 a day every day is sustainable if she's hot enough, 20 isn't, but if it's one crazy day once in a while, it's a different story. Then there's the whole supplements thing that some of the freaks here will fall back upon.

Agreeing on these circumstances for the hypotetical would go a long way in determining exactly how batshit insane it has to be to be draining.