I have yet to view this series, so cannot comment on the horizontal jogging shenanigans contained herein.

However, regarding the more general point, I've often considered sex scenes in film (and television) to be, well, rather unequal, especially when it comes to nudity. There are honourable exceptions of course. I'll never forget the reaction from my sister when we first watched All The Right Moves, as Lea Thompson stripped off ("Of course, you never get to see the bloke...") before her eyes practically burst from their sockets as Tom Cruise's, er, "manhood" flashed onscreen ("Wow. I was wrong...").