HIIT, or High Intensity Interval Training, is the latest buzz in workouts. It's designed around short bursts of exercise followed by rest, and researchers have shown that it gives you a great workout in no time flat. A complete workout can be as quick as 10 to 15 minutes, and three workouts a week is all you need according to one study conducted by The University of Western Ontario.In this video, Jen Ator, fitness director at Women's Health, demonstrates the HIIT moves, designed by Fhitting Room, that get her going in the morning. "I'll show you how you can fit them into your workout routine, no matter where you are or what your fitness goals may be," she says. All you need is a few minutes at the gym and a Fitbit Versa\u2122 to time your moves, track your heart rate, and count your calorie burn.\u201d Plus, this smartwatch features phone-free music, 15+ exercise modes, and guided breathing sessions\u2014just what you need after this intense exercise.Workout Must-HaveWhat to ExpectYou'll start with a warmup (it'll take about three minutes), and then you'll move into strength training, circuit training, and cardio. You'll do 50 seconds on, and then rest for 10 seconds. "It's all about the length of time, not the number of reps," says Ator. The WorkoutWarmupDo each of the following moves for 20 seconds. Once you've completed the first set, do a second 20-second burst of each move. Jumping jacksInchworm to shoulder taps (This is where you start with bent knees, palms on the floor, and slowly walk your hands out. When you get to a plank position, tap the opposite shoulders then walk your hands back up.)Lateral lunge on the right side, then the leftStrength TrainingRepeat each of these moves for 45 seconds apiece, then move on to the next one. When you're done, do the whole circuit again. Lateral lunge to the right while curling your left arm Lateral lunge to the left, while curling your right armSquats with a booty band positioned just below your kneesChest presses with a kettlebellCircuit TrainingTime to get your heart rate up! Do each of these moves for 50 seconds, then rest for 10 seconds as you move on to the next station. Any of these can be swapped out for another similar cardio or strength move. BurpeesKettlebell swingsKnee liftsPlank holdSquatsAMRAP (aka "As Many Rounds As Possible) TrainingFor the remaining minute, choose a cardio machine and do as many reps as you can in 60 seconds.Sweating yet? Watch this video and get inspired.From the VideoShot on location at Fhitting Room, NYC. Workout outfit: Fitbit Versa, starting at $199.95, fitbit.com; Free People Crop Top, $45, freepeople.com; Free People High-Rise Track Leggings, $69, freepeople.com; APL Athletic Propulsion Labs Mesh Sneakers, $160, netaporter.com. Work outfit: Fitbit Versa, starting at $199.95, fitbit.com; Zara Striped Top, $46, zara.com; Re/Done Jeans, $240, netaporter; Schutz Shoes, $170, bloomingdales.com. Anthropologie Bag, $88, anthropolgie.com.