The number one training method the experts turn to again and again for weight loss: interval training. What’s that? “Any form of exercise where your heart rate spikes and then comes down repeatedly,” says Rilinger. This generally means going hard for a set interval of time (hence the name), followed by active rest, then going hard again. That active recovery portion is key. You need to take it down a notch—OK, several notches—before ramping back up to a higher intensity interval.
High-intensity interval training, or HIIT, is one of the many styles you can do. Another popular one is indoor cycling, though this workout leans heavily toward cardio over strength training, Rilinger explains. She also notes that cycling requires you to use various muscles in your body—quads, hamstrings, glutes, and core, for starters—which once again translates to weight loss. “The more muscles you have to incorporate, the more calories you’re going to burn because those muscles all require energy in order to work,” she says. “And the more energy you use, the higher those calorie-burning numbers climb. It’s all a cycle.”
Try it: Here are 4 fat-burning stationary bike workouts that you might like. If you’re more of a treadmill person, this 20-minute treadmill interval workout will kick your butt in the best way. And if you want to skip the equipment altogether, this 10-minute lower body bodyweight interval workout is a good place to start.
2. Weight Training
Consider weight training “the mother of all weight-loss techniques, the highest in the workout food chain, the top of the totem pole,” says Rilinger. Resistance training, whether it’s with your bodyweight alone or with added weights, is an effective method to help build muscle and burn fat. Lifting weights has been shown to increase your resting metabolic rate, which means your body burns more calories even when you’re not working out. The effect isn’t enormous, but building muscle means more muscle mass to churn through calories as you go about your day. Plus, more muscle means you can go harder next time, increasing your weight, and getting even more out of each workout. Plus, if you’re lifting at a high intensity, you get the added bonus of the “afterburn effect,” which is when you’ve put down the weights but your body is still using up extra energy.
Rilinger suggests adding weight training to your routine at least three times a week. And since your body adjusts to workouts after being exposed to the same moves at the same intensity, becoming less effective over time, she says to mix it up about every three weeks to keep your body guessing.
Try it: First, if you’ve never done it before, be sure to read these strength training tips for beginners before you get started. And check out this primer on how to choose the right weights for your workout.
Now here’s a quick 10-minute total-body dumbbell workout and another 10-minute living room dumbbell workout to get you started. Here’s a 20-minute strength workout for when you have a bit more time. Here’s some info about how to superset at the gym. And if you’re going to use kettlebells and barbells in your strength workout routine, be sure to work with a personal trainer to make sure you’re using proper form. You’ve got this!
3. Boot Camp
For a workout that’s going to keep your metabolism elevated, turn to boot camp, as these classes (think Barry’s Bootcamp) combine two of the most effective styles of training: interval and resistance. “You’ll perform exercises, some more cardio-focused and others strength-focused, full-out for short bursts of time, coupled with short periods of rest,” says Adam Rosante, certified personal trainer and author of The 30-Second Body. But if it’s your first time going to a boot camp class, speak up. He says a good instructor will help you determine when you need to crank up the weight or intensity (tip: if you can cruise through 10 reps without any trouble, it’s too easy), keep your form on par, and can always provide a modification for any move that might be too tough or irritates an injury. If you can’t make it to a studio, though, you can virtually sweat it out with Rosante in his 20-minute C9 Challenge, or try this bodyweight-only 16-minute routine.
“At its essence, boxing is really another form of interval training,” explains Rosante. But it also makes you feel freaking badass. Here’s the trick to remember: It’s a common mistake for beginners to punch using only their arm strength, but the majority of your power is going to come from your core and you’ll use muscles that are typically ignored in other workouts (hey there, obliques).