When a client freaks out over three pounds she gained overnight, or celebrates five pounds she lost for no obvious reason, use this handy guide to help make sense of it.

Do your assessments make clients hate themselves? Are your workouts designed with a cookie cutter? Can your programs withstand the scrutiny of your peers? A veteran trainer explains why you need to take it easier on your clients but get tougher on yourself.

Being busy doesn’t mean you’ve made it at work. It means your work has made you. There’s a better way to get ahead.

The smallest niche can be the most fulfilling when it’s the perfect match for your interests and skills.

From “how much?” and “how often?” to supplements and vegan options, here are the answers to your clients’ most pressing questions.

What can you learn about marketing from a 20th-century campaign to sell cough medicine? That it pays to sell pain.

If you regularly discuss testosterone, thyroid hormones, and adrenal problems with your clients, here’s what you need to know … and why you may want to avoid the topic altogether.

The highly motivated client presents a challenge we’re rarely prepared for. Here’s how to help that client succeed before burnout or injury derail your program.

Many fitness pros want to share their knowledge by writing. Here’s what happened when a fitness writer decided to use her knowledge by training.

With the help of a good voice teacher, the author learned how to make the most of what he has as a singer, and how to help his clients get the best possible results for themselves.