The following is a guest article from Kristian Bouw.  We've all experienced it. Fear creeping in as a result of doubt. Doubt ...

Im going to try to explain why I was led to believe that certain things were true that werent, why I gave my clients bad advice, and what I suggest you do to avoid my mistakes.

As trainers we're taught pretty superficial guidelines for what blood pressure ranges are acceptable and which aren't. Dr. Spencer Nadolsky gives the 411 on what trainers need to know about blood pressure.

It's easier and cheaper to keep a current client than it is to try to find new ones. Here's 15 Ways to Maximize Personal Trainer Client Retention.

This is the recording of a great Webinar presented by Brad Schoenfeld for the thePTDC Inner Circle. He's arguably the top dog when it comes to hypertrophy research and spoke about the much-discussed "to crunch or not to crunch" debate (a topic which he published a paper on). He was also the 2011 NSCA Personal Trainer of the Year.

How to get old personal training clients back in the gym by writing emails the proper way.

5 great tips that any trainer can implement to have more effective consults.

Through writing two books on personal training and running this site, I get a lot of questions. And most, frankly, are bad questions.

[Infographic] 101 Different reasons to exercise. Includes a free poster to download.

Supplements are ruining the integrity of the personal training industry. Here's what you must do...