When determining the best product to buy, or the training habit that will gain you the most time on your competition, it’s extremely important to consider the source of the information you’re considering.  For every accurate source you find, there are tens, or even hundreds, of sources that will try to sell you biased or incorrect information.

Here’s a general guide as to which sources you can probably trust, and which sources you should take with a grain of salt.  The least trustworthy sources are at the top (with higher numbers), and the most trustworthy are at the bottom.

10.  Product reviews from a website that is also selling the product. Obviously they want to frame the product in a positive light so more people will buy it.  Get your information elsewhere.

9.  A triathlon magazine. Even if the advice is from a columnist, magazines are in the business of making money as well.  It’s rare that you see a negative product review in a triathlon magazine.

8.  A source that claims it’s a scientific “study,” without providing a link to the study, a description of the study protocols or any other documentation about the study. It’s easy to manipulate data to “prove” something about a product, especially if they don’t provide any information about how the study was created.  Look for documentation before buying into any claims of “scientific improvement,” and beware of the placebo effect!

7.  Internet forums. Many knowledgeable people frequent the popular triathlon internet forums.  Many MORE idiots post on the same forums, offering misinformation, personal anecdotes and trolling that is not at all helpful.  If you’re looking for information on internet forums, be ready to identify and wade through huge steaming piles of bullshit to get accurate information.

6.  Testimony from a famous superstar athlete. This athlete may be getting paid to say what s/he’s saying.  Besides, how relevant are the training habits of a pro triathlete (who can run 6 minute miles in his sleep) to you (who ran a 6 minute mile once, like 17 years ago in college)?

5.  Traditional wisdom in the sport. Though certain fundamentals have withstood the test of time, as our knowledge of sports science improves, others are not.  Take anything to which the “traditional” or “fundamental” label is applied with a grain of salt.

4.  Your training partners. The plural of anecdote is not data.  Though they may have some relevant information on local training, race strategy and where best to pick up the hot runner babes, their knowledge of triathlon is necessarily incomplete.  Take heed of their advice, but don’t act on their advice alone.

3 (T).  Your personal experience. In the end, you do know your body best.  You’re learning more every day about the types of stress you can apply in training, what equipment choices work best for you, what foods you respond to, and more.  However, still keep an open mind–you may find out you’ve been doing something wrong all along, or a new scientific development may come along and suggest a change of habit.

3 (T).  Your coach. Depending on your coach’s knowledge and the intimacy of the relationship you have with him or her, you may consider this a better or worse source than your personal experience.  So I’ll call it a tie.  A knowledgeable coach not only knows what you best respond to, but is also on top of the latest scientific developments in the sport.  S/he is a great source of information, second only to (and you may have guessed this)…

1.  A double blind, controlled, peer-reviewed, published, well-documented scientific study conducted over a large sample size and funded by independent sources who do not have a conflict of interest. These are the primary sources upon which all accurate sports knowledge is based.  The only flaw–there are so few studies that fit this bill that we’re left making up stuff as we go along and calling it “sports science!”