Q: In a few of your recent newsletters you mentioned “postactivation.” What is that, and can I use it to build more mass?

A: With postactivation, you strategically use a continuous-tension isolation exercise, like leg extensions, to increase fiber activation and nervous system excitation on the big exercise that follows (like squats or leg presses).

Wait. Isn’t that pre-exhaustion? No, with pre-ex you superset the exercises—no rest between them—which diminishes your ability to generate force on the important compound exercise you do second.

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