Two good looking German chicks sharing a dildo in the bedroom

And I'd have to say that sex is probably the best form of cardio you could ever have.

I think I get some cardio in my life.

Yeah, I've never heard of it.

You'll be a little flabby, but you'll get your jaw rocked up.

I'll get some rings, do lots of squats, go for a personal phase, and lots of fun.