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The silly idea that ‘more is better’ when you are trying to build muscle fast goes directly against the basics of exercise science. When is comes to increasing your rate of muscle gains, more exercise is almost never what is needed. Once you have “stimulated” muscle gains by hitting the gym hard, any additional amount of exercise, will in fact, prevent any muscle gains from happening.

You see, muscles are made up of ‘muscle fibers’. Muscles themselves work by contracting and reducing their length. In order for muscles to contract, they must move. For a muscle to produce movement, and therefore the power to move a given weight, it must do so by lengthening and contracting. In other words, a muscle performs exercise by contracting, and by doing this it generates force and power. While a muscle uses some of it’s fibers to perform a given exercise, it almost never uses all of them at the same time.

For a muscle to contract every one of its available fibers at the same time, it must be in a totally contracted position. To increase your muscle mass in the shortest time possible, the maximum number of muscle fibers possible must be “stimulated” The easiest way to achieve this is through multiple repetitions of a particular exercise. More often than not it is impossible to contract all of the muscle fibers in a specific part of the body, using only one repetition, without risking injury. Multiple repetitions however, allow it to be done safely.

As a general rule, it’s almost impossible to perform an exercise in a way that contracts all of the muscle fibers of the body parts involved. However, if the exercise is performed with intensity, many more muscle fibers will be stimulated, than there would have been otherwise.

Are you exercising for long periods of time to try to burn fat? If you’re like most people you probably are, but there is a better way. It’s called “high intensity interval training” (HIIT) and lately it has started to become pretty famous for its obvious health benefits.

–So What Exactly Are The Benefits?

1. Major Increase in Fat Loss. In a study done by Tremblay et al, two groups were assigned different training regimines. Group A performed the regular moderate intensity cardio (like jogging or bicycling) for 20 weeks and Group B performed a HIIT routine for 15 weeks. In the end the results of each group were recorded. Group B lost nine times more fat than Group A and in 5 weeks less (1)!

2. Increased Lactic Acid Threshold. Lactic acid is that burning sensation you feel when you work a muscle really hard. You’re lactic acid threshold is how fast your body can remove the lactic acid in your muscles. The higher the lactic acid threshold, the harder you can work your muscles before they get tired.

3. Increased peak power, or the maximum amount of energy available for a sustained period of time (2)(3)(4).

4. Increased VO2 peak or ability to utilize oxygen (2).

5. Shorter Workouts. I don’t know about you, but would you rather spend 30 minutes to an hour jogging along the road, or crank it up a notch and just spend 4-8 minutes performing sprints?

–So Why Does This Burn more Fat than just Jogging?

Although HIIT is much shorter than a normal “run for 30 minutes” workout, it burns more fat. To put it simply, after your HIIT training session is over with your metabolism explodes and tons of calories are being burned. So essentially with HIIT training, you burn most of the fat after your training session.

–So How Exactly Do I Perform This?

Simply put, HIIT is based around this concept: Go fast then go slow. Repeat. You can perform HIIT routines on pretty much any machine you want like a treadmill, elliptical machine, cycling machine, or apply it to almost any sport (swimming, cycling, running). Try to keep the bursts of speed at around 90%-100% of max effort.

Here is a sample HIIT routine:

Sprint 20 Seconds
Rest 10 Seconds
Repeat 4-8 Times

Or

Sprint 15 Seconds
Rest 5 Seconds
Repeat 4-6 Times

These are just samples, you can change it however you want (you could even use distance instead of time), but remember, HIIT is based around the concept of fast bursts of work. Also, to continually challenge yourself you should add to how many times you repeat the cycle. Say for instance day one you repeat the sprint/rest cycle 8 times, well the next time you should shoot for 9 times. Also remember the amount of time you sprint, rest, and the amount of times you repeat the cycle should depend upon your athletic ability.

If you havn’t trained at a high intensity since your high school gym days, take it slow at first. If you have to start at 80% intensity and perform less cycles that’s O.K. too. Everyone has to start somewhere. You may also want to check with your doctor before performing a routine like this as it is very physically demanding.

If you want some more tips on how to break through fitness plateaus, techniques to become more flexible, want to learn what and how to use “speed effort” and “dynamic weight” , get free book and product reviews check out www.freefitnesstips.info.

(1) Tremblay, A., J. Simoneau, and C. Bouchard. Impact of exercise intensity on body fatness and skeletal muscle metabolism. Metabolism. 43:814-818, 1994.

(2) Laursen PB, Blanchard MA, Jenkins DG. Acute high-intensity interval training improves Tvent and peak power output in highly trained males. Appl Physiol. 27:336-348, 2002.

(3) Truijens MJ, Toussaint HM, Dow J, Levine BD. Effect of high-intensity hypoxic training on sea-level swimming performances. J Appl Physiol. 94:733-743, 2003.

(4) Lindsay FH, Hawley JA, Myburgh KH, Schomer HH, Noakes TD, Dennis SC. Improve athletic performance in highly trained cyclists after interval training. Med Sci Sports Exerc. 28:1427-1434, 1996.

Nathan Latvaitis is an avid fitness researcher. He believes that through knowledge, anyone can achieve their goals. Nathan runs a website at FreeFitnessTips.info which offers a free 6 day course offering just that - knowledge.