Greasing the Groove, Explained: The Power of Frequent, Perfect, Sub-Maximal (Easy) Reps

Grease-the-groove (GTG) is an extremely effective (and popular) strength-building method—particularly for those who wish to increase their strength without adding more muscle. But although the practice is "easy", it must be done throughout the day and it must be perfect. Here's how and why it works.

Sherrington’s Law of Irradiation: Why Tension Is Important

Read this article and the next time you read something from StrongFirst or attend a Course or Certification and notice we always say, “Get tight!”—you'll know the research-backed reasons why.

How to Unlock the Potential of Individual Differences

As a researcher in individual differences, I suspect there is a perfect training program for you today and a different perfect program for you next year. To find that program, you have to be both a student and scientist of strength.

The Simple Way Pavlov’s Dogs Can Improve Your Performance

You have probably heard of "Pavlov's dogs." But did you know the work of famous Russian scientist Ivan Pavlov might have a powerful application to your training?

Energy Systems and the Snatch Test

A perfect application of Strong Endurance™ protocols to the 5-minute snatch test. The science behind this method should help you dominate this 5-minute strength endurance challenge like never before.

A Science-Based Plan to Prepare You for the SFG Level I and SFG Level II

This prep guide for the SFG Level I and/or SFG Level II builds your conditioning and strength using Pavel’s latest research. It is a science-based plan backed by Soviet research as well as our own.

How to Get the Benefit of Depth Jumps Without Jumping

Plyometrics help us build explosive power—and therefore also absolute strength, speed strength, and pure speed. While depth jumps are an effective approach, the overspeed eccentric swing is a safer alternative.