Something we can probably all agree on: It's freakin' tough to stay fit when life's this busy, and it only seems to get harder every year—especially when it comes to our abs. But with a little effort—just 10 minutes a day of smart strength training—you can see a mega difference in your core. "It's amazing how quickly your body will respond," says trainer Larysa DiDio. It doesn't take much to improve your core; you just gotta do it. In front of the TV; on your office floor (just shut your door for privacy); in your hotel room; wherever. Just find a way to get it done. Will you have the abs you had in your 20s? Of course not; that's silly. But will you look and feel your best? Absolutely! And that's worth a little effort—as long as it doesn't mess with the bajillion things you have to do today—don't you think?

How to do it: Perform each exercise for 45 seconds, resting for 30 seconds between moves. Repeat the circuit twice.

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