•1. Elevator lifts while you're on the lift

Flat feet/tippy-toes, flat feet/tippy-toes repeat until you reach your destination.

•2. Reverse push-up

With your back to the wall railing (holding your weight by the palms of your hands,) lean back to a slightly challenging angle. For the more aggressive approach, instead of holding this position, push away and back (reverse push-up.)

•3. Hop

To the extent permissible by the shoe you wear to work, jump up and down a bit. If you feel like going wild, go for the full Jack!

•4. Imaginary chair

Kick your desk chair out of your way for a few minutes and work out your thighs.

•5. Walk and Talk

When you're on the phone, who says you can't stand up and wander around your office (or desk or a very small circle.) Especially if you've got the luxury of a speaker phone, get your tush up!

Heads up: if you close the blinds and learn how to breathe properly, no one will even notice if you're doing sit-ups.

•6. Arm circles

When you're reading your screen, stretch both arms out so they are parallel with the floor. Make simultaneous 3 or 6-inch-ish circles with your hands. Try 25 or 50 or 100 then reverse the direction.

•7. Sit up

We're not talking big crunch here, I mean sit up straight. Breathe deeply, moving your belly in and out and stop slouching. Give your back rest a break for a while. Bonus: lean back as far as you can without actually touching your shoulders to the chair.

•8. Yoga ball

This is my favorite. I'll kneel on my yoga ball in place of my chair. It reminds me of my posture and it activates my core.

Heads up: when I'm feeling lazy, I kick the ball under the chair and use it as an ottoman (which by the way, at least seems like a good idea for blood circulation.)

•9. Flamingo stance

Stand on one foot. It's good for balance (a lack of balance leads to broken bones in the unbalanced senior citizen group, so if you're not in that category yet, you can avoid it... the balanced in the head thing too, I hear this is a mental exercise as well as physical.) Bonus: stick your leg out to the side to activate your hip flexors or back for the glutes.

•10. Curl

Find some 5 to 10 lb. object and do a couple sets of biceps curls.

•11. For the ladies

Kegels. Who's gonna notice?