High Intensity Interval Training – The sure fire way to drop that excess bodyfat and get in the best shape of your life!
What Is HIIT?
HIIT (High Intensity Interval Training) is cardio performed at such an intense level that your body will spend the rest of the day expending energy to recover from the ass-kicking you gave it. This is commonly referred to as EPOC (excess post-exercise oxygen consumption) and it means that you consume a great deal more oxygen recovering from the exercise bout than you would have if you’d just done a steady-state workout.
This means that you will be burning up to nine times more fat while sitting on the couch later that night than you would have if you’d spent an hour on the treadmill at a moderate pace.
Obviously, I am talking about intense training. You will need to push yourself out of that comfort zone you have gotten used to and really challenge yourself. If you are willing to do this, however, I can guarantee that you will spend less than half the time you usually do on those machines and get much leaner in the process.
The Benefits Of HIIT
HIIT training has a number of benefits in addition to the reduction in training time. First of all, this type of training is far superior to steady-state exercises when it comes to increasing your VO2 max, which is the maximum amount of oxygen you can uptake during exercise. This means that you’ll be in much better shape when it comes time to sign-up for the local 5K run.
Secondly, when you perform long-duration, moderate-intensity exercise, you can actually put yourself in a catabolic state in which you will start losing muscle mass. That’s right: Some of that hard-earned muscle will start degrading itself in your quest to get lean.
The reason is that there are two types of muscle fibers in your body: fast twitch and slow twitch.
Slow twitch fibers are more compatible with endurance training (such as a steady-state one-hour run), whereas fast twitch fibers are more compatible with short, intense bouts of exercise (such as weightlifting or sprinting).
When we train in one of these modes, our muscle tissue has a tendency to take on the appropriate properties. As an illustration, imagine a marathon runner and a sprinter. The sprinter is composed of fast twitch muscles and carries a great deal more muscle mass, whereas the marathoner has a lot of thin, slow twitch muscle fibers so that his body is as light as possible to transport across those great distances.
This is going to the extreme to prove a point; however, you can see how much of a difference the type of training you do has on your body shape.
Lastly, HIIT training, when combined with a slightly hypercaloric diet (above maintenance level), can actually be anabolic and help you to add muscle mass without adding very much body fat. This means that you can develop the muscle you want without having to bother with endless treadmill torture.
So now that I’ve convinced you that this is a better way, how do you go about doing it?
The Specifics Of HIIT
There are a few different ways to do HIIT training.
You can either do all-out sprints — during which you go above your VO2 max for a very short period of time — coupled with adequate recovery periods or you can do sprints that are just below your VO2 max for a slightly longer period with an adequate recovery as well. The first option will really push your body and will elicit the greatest EPOC and VO2 max improvement. The second option will train your body to perform at a very high intensity for a slightly longer period of time while taking less time to recover.
For the first option, warm up at a comfortable intensity for 5 minutes. Then, give your maximum effort for 15 to 30 seconds, followed by a 2-minute recovery. You can walk during the recovery or you can just take it down to a very light jog, depending on your current level of fitness. More than likely, though, you will be going so hard that you will need to walk during the recovery. Perform between 6 and 10 of these intervals, and finish with a cool down.
For the second option, do the same warm-up as in the first option, and then sprint at approximately 80% of your maximum intensity for 45 seconds to 1½ minutes. Follow this with a 1- to 2-minute recovery period. You may find that your recovery periods are shorter since you aren’t running quite as intensely as in the first option. Repeat this sequence for 5 to 8 intervals, and follow it with a cool down.
Working HIIT Into Your Training
These types of workouts are very intense and should only be done 2 to 3 times a week. A great idea is to perform them on your “off” days from weightlifting; however, if you must do them on the same day, I strongly recommend performing them at a separate time so you can devote all your energy to each session.
As with your weight training, be sure to take in a post-workout drink (or quickly absorbed meal) to help replenish lost glycogen and repair the muscle tissues.
On a final note, I must enforce that this type of training is not for everyone. Since it is so high in intensity, many people find that they simply cannot work out at this level and end up bypassing their workout altogether. If this happens, you are much better off performing a more moderately paced endurance-type cardio workout.
However, try to challenge yourself with a few harder minutes interspersed throughout your workout. This will help increase your metabolism (although not as much as with HIIT), as well as your overall fitness level, which may help you to eventually include HIIT training as part of your workout.
Maximize Your Workout
Whether you have just packed new muscle onto your frame or are trying to gain muscle tissue with minimal fat, HIIT training is your best option. Not only will you spend much less time on the cardio machines, but you will not risk putting yourself into a catabolic state associated with muscle tissue loss. You will also increase many of the anabolic hormones in your body that are associated with building muscle.
So next time you step on the treadmill, crank your cardio up a notch. Trust me, you won’t be sorry!
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Even though muscle weighs more than fat, body fat takes up way more space. Notice the attached photo. 5 pounds of 5 is much larger than 5 pounds of muscle.
