If there were a workout you could do in bed, you would. Constantly. Amirite?

I hate to say it, but . . . um, sex?

It's called masturbation. One arm can really get ripped if you do it frequently.

Knew someone would... Quick reply, nice one

I know a real, not sex one!! Lie one one side with your legs straight, then just lift one leg straight up into the air. After a while you can feel it. Get fit!

6 inches, those things, sit ups/crunches, planks, push ups, bicycles, tow touches, butt flexes.. I think you get my point.

me!

There is. And I do.

The horizontal tango xD