In my recent article Intervals Don’t Work I discussed the scientific evidence surrounding the use intervals for fat loss.  By why, if science says intervals aren’t that much better than endurance exercise, does everyone report such great success with intervals?

In my mind, there are a few possible reasons for this:

1.  Actually Doing Cardio

Before interval training became en vogue, many people weren’t doing much (if any) cardio.  Whether it was due to fear of cardio burning off hard earned muscle (which it doesn’t), boredom from endurance style cardio, or lack of the “cool factor” associated with intervals people just weren’t getting it done.  The additional calories from doing something instead of nothing could easily account for the “success” of intervals for those that were previously doing nothing for conditioning.

2.  Working Intensely

Many who were actually doing cardio before considered walking on a treadmill sufficient to burn calories.  Of course, exercising at this intensity is hardly different than sitting on the couch watching Gilligan’s Island reruns so it should come as no great surprise that doing high intensity interval work brings about greater results.  Had they done higher intensity steady state work the result would likely have been similar.

3.  Efficiency

Those that were doing cardio before and doing it with success (i.e., busting ass and burning kcals) realized that it takes time and hard work to lose extra fat via cardiovascular exercise.  Intervals (even if not technically better in terms of fat loss) were a welcome addition since they made achieving the same results possible with less of a time commitment.  So not better, but faster.

4.  Appetite Supression

While everyone knows that it is quite possible to burn off the same number of calories from endurance or interval training, intervals have the added bonus of appetite supression.  This could lead to less eating for those who are doing intervals and not consciously dieting.  It could also result in greater ease in sticking to a nutrition plan for those who need a more formal eating plan.  Personally, I lean slightly toward this as the most likely player for the relative success of intervals because the calorie deficit from any exercise is fairly dismal compared to the calorie deficit that can be achieved with food.

What do you think?

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I have to be honest and say that I was once swept up onto the interval training bandwagon.  But when it comes to fat loss, the research isn’t actually as strong in favor of intervals as you might think.  Check out my review on TMuscle HERE and let me know what you think.

Special thanks to Nate Green for editing my piece and making it look like I know how to write.

No thanks to the haters in the discussion after the article for the unsubstantiated personal attacks.  Damn interwebz.

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As many of you may know, I believe that reading for an hour per day is paramount if you hope to become a leader in any field.  Fitness and nutrition are no different.  Here are a few things to get you started for today.

1.  We know to program in HTML, Java and Windows, but we don’t know how to cook or eat.

Last week I was reading my colleague Aaron Schwenzfeier’s blog and saw this link to an article he posted.  Since Aaron always posts really thought provoking stuff I decided to check it out and I’m glad I did.  Check out this great essay by Frank Forencich HERE. 

 2.  You think you’re doing Tabata workouts, but you’re not.

Lyle McDonald does an incredible job reviewing the ever popular Tabata study that was the initial stimulus for all of the “Tabata” based workouts that you see all over the internet.  If you’re using this type of training you need to read this article.  Interestingly, what you’re probably doing looks nothing like what was actually studied in the first place.  Check out Lyle’s post HERE.

A while back I posted a three part series on the use of interval training for fat loss.  You can check them out here:  Part I, Part II, Part III.

However, I got a couple emails suggesting that it was a little difficult to transition from steady state cardio if you’re just getting into intervals.  I also got an email telling me that intervals are not for beginners.

Fortunately, I was recently speaking to Craig Ballantyne of TurbulanceTraining.com and he mentioned that he’s had great success with intervals for beginners and he was kind enough to share his ideas with me.  Although neither of us is really a huge fan of treadmills, I’ll use this as an example because it is pretty easy to understand.

Let’s say that a beginner can walk on a treadmill at a steady pace of 3.5 for twenty minutes.  You could start to implement intervals by having that person performing at a higher level than usual (3.8) followed for about one minute followed by a minute at a lower level (3.2).

By doing this you’re gradually increasing the intensity at which someone can work.  Over time you’ll be able to increase the intervals to higher and higher levels until they can go full tilt with a true interval protocol.

So if you’re just getting started you can definitely give this a go.  Also, I’d highly recommend checking out Craig’s website at TurbulanceTraining.com

Last week I posted a couple blogs on interval training for fat loss.  If you missed them you can check them out here.

Part I
Part II

I hadn’t initially planned to write a part three, but in light of the questions I’m being asked, I realized I may have left out a few things.

Training Frequency for the Conditioning Period

As with most things, the amount of interval training you need to be doing depends on several variables so there is no cut and dry answer that applies to everybody.  However, I generally like to start with two interval sessions per week and build from there.

Whether you’re a complete novice and you’ve never touched a weight in your life or you’ve trained for years I’m going to suggest that you start off nice and easy by performing the introductory cardio phase three times per week for three weeks.  If you’re a novice, you also need to start weight training (what to do specifically is beyond the scope of this article), and get your diet together.

If you’re more advanced, it wouldn’t hurt you to review your diet too.  All great physique transformations start in the kitchen so this is an essential starting point for any fat loss plan.  If you’re looking for ways to lose fat, chances are that your diet isn’t where it needs to be in the first place.

I personally like to start most of my fat loss clients with a 5 session per week exercise plan and go up or down from there as necessary.

Here is a sample NOVICE template for the conditioning period
2 Lifting Days / 2 Cardio Days / 1 Recreational Day

Mon  – Off
Tues – Weights
Wed  – 30 Minutes Cardio
Thurs – Weights
Fri – 30 Minutes Cardio
Sat  – Off
Sun – Long Walk, Hike, or Recreational Sport

Here is a more ADVANCED template for the conditioning period
3-4 Lifting Days / 2 Cardio Days / 1 Recreational Day

Mon  – Weights
Tues – 30 Minutes Cardio
Wed  – Weights
Thurs – 30 Minutes Cardio
Fri – Weights
Sat  – Weights (optional)
Sun – Long Walk, Hike, or Recreational Sport

You’ll notice that I don’t like indoor “cardio” very much and I know most other people don’t either so I encourage my clients to get out and do stuff that they actually enjoy.  This leads to greater long term adherence to the program and an increased likelihood of surrounding themselves with other active people instead of coach potatoes.

If fat loss was my goal and I had to drop an exercise day due to time and recovery constraints I’d probably drop one of my lifting days (i.e., Saturday) instead of a cardio/recreational bout.

Training Frequency for Intervals

After the three week conditioning period you can start into the interval training as described in Part II, but don’t go at it more than twice per week.  Personally I’d suggest doing it on “off” days from your training to start.  If you’re doing all the things I’ve suggested above and added interval training you should be getting results.  If you’re not, it’s probably your diet.  Check this before thinking about more intervals.

Here is a sample NOVICE template for interval training
2 Lifting Days / 2 Interval Days / 1 Recreational Day

Mon  – Off
Tues – Weights
Wed  – Intervals
Thurs – Weights
Fri – Intervals
Sat  – Off
Sun – Long Walk, Hike, or Recreational Sport

Here is a more ADVANCED template for interval training
3 Lifting Days / 2 Interval Days / 1 Recreational Day

Mon  – Weights
Tues – Intervals
Wed  – Weights
Thurs – Intervals
Fri – Weights
Sat  – Off
Sun – Long Walk, Hike, or Recreational Sport

If you MUST add a 4th training day I would use this template
4 Lifting Days / 4 Interval Days / 1 Recreational Day

Mon  – Weights / Intervals
Tues – Weights / Intervals
Wed  – Off
Thurs – Weights / Intervals
Fri – Weights / Intervals
Sat  – Off
Sun – Long Walk, Hike, or Recreational Sport

In this case I think that the increased recovery demands from the weight training, dieting (you are trying to lose fat right?), and intervals would require at least two off days during the week.  I would suggest abbreviating all workouts to 30-45 minutes and performing intervals at the end.  Alternatively, intervals could be done in the morning and training at night or vice versa to save time.  This could also be done for a 3 day lifting program in the interest of time or recovery.

However, I think it should be said that this level of training is not usually necessary if your diet is where it should be.  I’ve only had to use this level of exercise with ONE client in 9 years so think twice before trying this yourself.

Also, if you’re on a severe diet such as that described in Lyle McDonald’s Rapid Fat Loss Handbook, don’t even think about attempting intervals.  You just won’t be able to recover and you’ll be doing more harm than good.

Used carefully intervals can be the missing key to a ripped midsection.  Used stupidly they can lead directly to overtraining and feeling like crap.

Be smart and get lean.