Just because slush, snow, ice, or lack of daylight has pushed your cardio workout indoors doesn’t mean you have to be bored there. The groundhog predicts an early spring, but alas, nasty days aren’t likely to be as rare as cheap health insurance co-pays. So be ready!

To take your workout from “get me outta here” to “dang, that was good!” today, follow the rule of 10.

Don’t spend more than 10 minutes on any piece of cardio equipment. Switch from the elliptical to the stepmill to the treadmill and back around again. Throw the bike in there, too. Now here’s the real survival secret: Don’t do the same thing for all 10 minutes (and that doesn’t mean switching between reading US Weekly and Star magazine! You’re not trying to read during this, are you?)

On the first machine, do:
2 minutes easy, 2 minutes hard
1 minute easy, 1 minute hard
2 minutes easy, 2 minutes hard

On the next machine, try:
40 seconds easy, 20 seconds hard
50 seconds easy, 10 seconds hard
Repeat these intervals five times.

Want more? Here’s a great intro to interval training from Men’s Health that offers even more ways to shake it up.

You’ll be so occupied with watching the clock and watching for the next available piece of equipment that there’s no time for yawning or hating it. Challenge yourself: Work out 10 minutes longer today than you thought you could. Now was that so bad?