Excercise
"Ahhh... what better way to burn off a great meal than with some healthy exercise."
"A nice healthy jog should get the blood pumping."
"Ooh... bubbles! That's... err... cardiovascular, I'm sure!"
"Oof... this medicine ball would be a lot tougher it weren't just full of air."
"Well, that was a good workout. Now it's time to hit the showers... uh, bath!"