the size principle

How Muscles Contract: The Size Principle

The size principle means that motor units (motor neuron and…


all-or-none law

How Muscles Contract: The All-Or-None Law

The all-or-none law states that if a stimulus exceeds an…


delayed onset muscle soreness, upper body/lower body split

The Upper Body/Lower Body Split – What Are The Pros And Cons?

The upper body/lower body split divides your muscles into…


muscular endurance in sports, strength, periodization

Periodization Of Training – A Full Guide

Periodization refers to dividing your yearly conditioning…


workout splits

Ultimate Guide To Workout Splits – Organize Your Training Better

Workout splits refer to different ways of dividing your…


stretch-shortening cycle

The Stretch-Shortening Cycle – Why Does It Increase Performance?

Stretch-shortening cycle (SSC) is a muscle action where an…


VO₂max

Maximal Oxygen Uptake (VO₂max) – The Best Measure of Aerobic Fitness

Maximal oxygen uptake (VO₂max) refers to the maximum amount…


fine motor skills

What Are Fine Motor Skills?

Fine motor skills are small movements that require…


gross motor skills

What Are Gross Motor Skills?

Gross motor skills are broad and energetic movements that…


learning theories

Learning Theories: A Summary of The Three Main Theories

Learning theories describe how people learn by interacting…