No Bad Reps

Muscular Endurance

2 articles

Editorial illustration for Training for the Adaptation You Actually Want: A Specificity Framework for Strength, Size, and Endurance
Training Theory

Training for the Adaptation You Actually Want: A Specificity Framework for Strength, Size, and Endurance

The SAID principle emphasizes that your body adapts specifically to the demands placed upon it. This article details how to align training variables like load, repetitions, and exercise selection with specific goals such as maximal strength, muscle hypertrophy, and muscular endurance for optimal adaptation.

Hana Kim·October 21, 2026
Split image showing a woman lifting heavy weights and performing high repetitions, illustrating progressive overload principles for muscle and strength.
Training Theory

Which Progressive Overload Method Should You Use? Match the Variable to Your Goal

Progressive overload is key to fitness gains, but the method matters. Choosing the right variable—like weight, reps, or rest—to increase depends on whether your goal is strength, muscle size, or endurance.

Hana Kim·June 19, 2026