What is Time Under Tension and How to Use It The Basics of Time Under Tension and How to Use it You’ve probably heard the phrase “time under tension” before. It’s common to hear “it’s the key to growth,” referring to time under tension tossed around the gym. This phrase is commonplace because altering it is a great way to increase the dose-response (effect) of an exercise. But to get the most out of it, one must first understand how…