Targeted muscle growth with hypertrophy training—studies show when rest between sets is most effective.

Learn why high repetitions in strength training can be effective when the effort is right–including TUT, technique, and practical tips.

Progress Stalls Despite Training? A Fitness Professor Explains Why and How to Avoid Stagnation

Why a caloric surplus is necessary for muscle growth and how to avoid fat gain during the bulking phase.

The increase in muscle cross-section can occur in two to three ways. An expert discusses the types of hypertrophy training:

Prof. Stephan Geisler is frequently asked whether strength training is harmful to teenagers. He now aims to debunk the "zombie myth."