3 Ways to Burn Off a Slice of Pizza

The treat: One slice of pizza (272 calories)

Try this: Go shopping for at least 104 minutes.

Or this: Dance for 53 minutes.

Or this: Do a 28-minute mini-circuit—pedal fast on a stationary bike for 2 minutes, jump off and do push-ups for 1 minute, then climb stairs for 4 minutes; rest, then repeat sequence 3 more times.