Don’t let the complainers, the chronically late, or the clients who just won’t listen ruin your day. Here’s how to handle them with smarts, so you can be happier.

Dead bugs, bird dogs, and glute bridges are almost always done wrong. But before you can teach the right form, you have to understand why you’re doing them in the first place.

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.

Muscle stiffness isn't necessarily bad for your client, so it's important for you to know when and where it can be a good thing.