What it is: This video game on Kinect for Xbox 360 (think Wii Fit) lets you put your body into the game and acts as your personal trainer. With workouts created by "Women's Health", it tracks your movements, gives you feedback and builds workouts based on your body type, fitness level and goals.
What it costs: $49.99 (downloads are extra)
Why it's fun: 1. It's a video game. And 2. You can download "Dance Workout: Bollywood" from XBOX Live in addition to the celeb-trainer-approved exercises that already come with the program.
What it is: This Latin-inspired dance-fitness program blends international music such as salsa, cumbia, samba and merengue with fun dance steps to get you moving, shaking and sweating with joy. Find a class near you.
What it costs: Class rates vary. But if you do it at home, the Total Body Transformation System DVD Set, complete with maracas-like toning sticks, is $59.95; and the newly released video game is about $40.
Why it's fun: Despite being around since the '90s, Zumba has grown into a worldwide phenomenon practiced in more than 100 countries -- so clearly, people like it. The fun factor is high, the music is catchy, and you can burn more than 400 calories in 45 minutes while learning new dance moves. (Salsa dancing night, anyone?)
What it is: Pilates meets boxing. Created by Swedish dancer and celeb trainer Viveca Jensen, this technique blends sexy dance moves, Pilates moves and boxing moves to sculpt your core and arms while giving you an intense cardio workout.
What it costs: $16 per class (at her main studio); $19.95 for the DVD; $24 for the weighted gloves
Why it's fun: It worked for the Duff sisters and a few Victoria's Secret models? Sold.
What it is: Remember the many hours you spent going 'round and 'round the roller rink? Well, skating is back, but it's better this time around. Derby Lite, a roller-derby-inspired fitness class (sans the violence) incorporates stretching, conditioning, cardio and skating drills for all-over fitness. Started by roller-derby-competitor-turned-mom Barbara "Queen B" Dolan of Oak Park, Ill., it's poised to take the country by storm.
What it costs: Dues are $60 per month, plus required gear. (If Derby Lite isn't in your town, let them know.)
Why it's fun: You get a tough, two-hour workout that makes you feel like a kid again, and an excuse to buy some pretty nifty gold-plated skates. You can even work out in fishnets!
There's nothing like the feeling you get after a good, adrenaline-fueled workout -- your endorphins are high, your body is tingling and you feel way better than you did before, even if it was a total pain to motivate.
But while falling in love with a fitness routine can be amazing, falling into a rut can be a drag -- especially if it starts taking a toll on your waistline. Sure, there are tons of incentives to join a new gym at the beginning of each year, but sometimes the holiday-fueled gusto behind your New Year's resolution wears off; other times, you're just over the gym and ready for a change of scenery. Most of the time, it's just that: time. There's not enough of it, and you don't enjoy your current fitness routine enough to make any. So bottom line, it's all about change.
Fortunately, getting out of said rut isn't as hard as it seems. There are a million (OK, 12) great reasons to put down the potato chips, drag your butt off the couch and start getting excited about working muscles you never knew you had.
In DVD, class or downloadable form, these popular new fitness routines take their inspiration from dancing, yoga, boxing, boot camp, even childhood activities. Some are the secrets behind the sculpted bods of celebrities such as Natalie Portman, Hilary Duff, Sofia Vergara and Kelly Ripa. All were created to kick your butt, improve your confidence level and make you a healthier, slimmer person. Trust us, you'll actually want to get up early after trying some of these. Check out what we deemed the 12 coolest ways to sweat off calories -- until the next great workout routines come along.