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What is High Intensity Interval Training?

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Amanda Rose, creator of Warrior Fight Club, shares her insight into the benefits of HIIT or high intensity interval training.

“Although my first love is yoga, I have been incorporating more cardio into my workouts,” says Amanda. “With a history of cardiovascular disease in my family, I understand and respect the need for a healthy heart.”

Considering that the #1 excuse people use for not exercising is lack of time, intervals are a perfect solution. It is quick, effective and to the point.

Interval training incorporates the body’s two energy systems: the aerobic and anaerobic. The aerobic system uses oxygen to convert carbohydrates into energy. When you run or walk for several miles, you are tapping into this system. The anaerobic system draws energy from fuel stored as glycogen in the muscles for short bursts of energy, such as sprinting. This system doesn’t utilize oxygen and cannot provide enough energy for a sustained effort.

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Because intervals require both systems, interval training has lots of benefits:

1. Increase calorie burn: The more vigorously you exercise, the more calories you burn! But interval training can also cause an “afterburn effect,” where the body burns more calories anywhere from 24 to 48 hours post-workout. So when you are relaxing on the couch, the furnace is still cooking. In addition, it boosts metabolism and builds lean muscle.

2. Improve cardio function: Intervals cause your heart and lungs to become bigger, stronger and able to adjust to sudden intense challenges (like running to catch a bus). Plus, it allows you to exercise longer and with more intensity, which improves your overall athletic performance.

3. Focus on fun: Because intervals are short you’re less likely to become bored. Intervals add a nice variety to traditional workouts, especially since you can vary the intensity level, length of work, rest intervals and number of reps. You can even opt to change the type of exercise by riding a bike, running on a treadmill or even jumping rope. The great thing about interval training is that there is no one way of doing it. Different lengths of work and recovery bring different benefits and challenges, all of which are good.

4. Lessen your time commitment: As I previously mentioned, you can do intervals in a short amount of time. My workouts average 20 to 23 minutes and I am completely spent! I have no excuse to not get it done and neither will you. AsOne’s Deck of Cards and Basic Circuit are particularly good and short as they are under 20 minutes each!

5. Improve your health: Interval training can improve insulin sensitivity, optimize cholesterol levels and decrease blood pressure.

DISCLAIMER: Interval training is tough, so if you’re just starting to work out, spend at least one month working on your stamina with steady intensity cardio workouts before incorporating intervals into your routine.  Add these intervals in slowly and avoid repeating them on consecutive days. Intervals are hard on the body so give yourself ample rest and be sure to practice yoga too!

Booya features some amazing interval training workouts—check out our Bootcamps for guidance from the best trainers in the industry!

How to Perform a Proper Burpee

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This post has been brought to us by Mark Merchant and George Vafiades of As One Effect. Check them out on BooyaFitness.com.

Ah, the burpee – one exercise that requires, mobility, flexibility, strength, systemic conditioning (full body fitness), core and shoulder stability – love the burpee.  The burpee is an integral part of the As One program  so, if you’ve taken class, you certainly know how to do this.  But, if you, or a friend, want to come in and check out a class, this is a perfect way to get ready.

How to perform the burpee:

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1. Stand with your feet shoulder width apart.

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2. Bend over to the  ground with your hands down.

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3. Jump your feet back as you lower your chest to the floor.

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4. Press up and in one motion jump your feet back to starting position.

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5. While standing up, jump up with your hands over your head.

Eager to try the burpee (aka squat thrust)? All of our bootcamp workouts feature the move!

The Long-Term Benefits of Brooklyn Bridge Bootcamp

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“Other workouts have become so easy compared to yours,” is something I often hear from my Slim & Strong participants after a month of training. It’s great to hear that they build up so much strength, endurance and fitness that they see the difference quickly. While our Slim & Strong classes can feel like you got hit by a bus after your first time, there is a method to the madness and we don’t work out that hard just to show off.

Our Slim & Strong and Brooklyn Bridge Boot Camp workouts follow the idea of high-intensity interval training, also called HIIT. This acronym means that for short periods of time you push yourself to maximum intensity and then follow it with lower intensity. The time at maximum intensity increases with regular practice and the time of lower intensity shortens as you get fitter. The idea of the workout is to maximize your workout time to get the most benefits.

Many people care about how many calories they burn during a workout. They think the harder and longer they work and the more cardio they do, the more calories they burn. Similarly, they might think that the less they eat the more weight they lose. That’s actually not true. At least, it’s not the whole picture. When it comes to changing your body it’s not just about burning calories. It’s about which hormones you activate during a routine that make you burn body fat and gain lean muscle while ensuring muscle recovery and healthy body.

Our high-intensity interval training workouts activate quite a few hormones:

– Adrenaline ensures you burn subcutaneous fat (the fat underneath your skin).

– Growth hormone is released with strength training and bursts of high intensity that break the anaerobic threshold. Growth hormone is essential for getting you lean, boosting muscle growth and recovery, and keeping you young.  It declines as you get older.

– Your insulin sensitivity is improved. That means your cells need less insulin to make energy from the sugar in your blood stream. Balanced insulin levels are important to lose weight and stay healthy. High insulin levels are associated with a slew of health and metabolic issues, such as weight gain, pre-diabetes, diabetes, high cholesterol, metabolic syndrome, high blood pressure, obesity and various inflammatory conditions (including heart disease cancer, stroke and arthritis).

– Short bursts of intensity (versus long and drawn-out cardio sessions) prevent cortisol build-up. High cortisol levels are associated with fat storage and muscle loss. The less muscle you have, the slower your metabolism and the quicker you gain weight.

– EPOC is increased. This acronym stands for excess post-exercise-oxygen-consumption and it means you burn more calories following a high-intensity workout than after a low intensity workout. The after-burn effect can be active for up to 48 hours and means you might be burning an additional 20% of the calories you burned in your workout. The harder your workout, the greater the EPOC.

– Nitric oxide production increases during a workout. This substance makes your blood vessels slightly bigger so that nutrients and blood can get to the muscles to keep them working hard longer.

If you call the treadmill, elliptical, or spinning bike your home without doing any strength training and rest days, then you might actually do more harm than good. Here’s why:

– Muscle breakdown: Long-drawn-out cardio sessions promote catabolism or muscle breakdown. Extensive cardio sessions make your body release the stress hormone cortisol. It makes your body use protein for energy. Since your muscles are made out of protein you will lose muscle mass. Long-term cortisol elevation also leads to fat storage in the face and waist: not a good look. HIIT isn’t meant to be done daily. Three times a week is ideal to promote recovery and muscle growth.

– Stress on the heart: Recent research has found more and more that lasting stress on the heart can lead to something called “athletic heart syndrome”, where your heart becomes enlarged in order to keep up with the stress placed on it. It can also lead to an increase in your body’s stress response (high cortisol levels) and lead to an irregular heartbeat. However, we’re talking hours and hours of cardio and this should not be a concern for the average exerciser.

Ask yourself:

1) Does your workout change your body? Is it getting you leaner, fitter, stronger and more powerful?

2) Does it energize you and make you feel healthier?

3) Does it make you feel uncomfortable enough to promote change?

If not, make sure you incorporate workouts that combine strength training and short bursts of cardio. The Slim & Strong workouts on Booya follow the HIIT model and are perfect at-home routines. Most importantly, don’t forget about resting your body. If you don’t give your body a chance to recover, you are not allowing your muscles to rebuild and recover and you’re actively breaking them down. Try yoga or go for a swim. Be good to your body and work with it – not against it.

– Ariane Hundt, founder of Brooklyn Bridge Boot Camp.