Training Science
Training principles, adaptation, strength, endurance, flexibility, and how training variables fit together.
Evidence-informed fitness education — clearly explained
Understand your body. Train with purpose. Think beyond the claim.
Clear guidance on strength training, exercise technique, anatomy, physiology, nutrition, and fitness evidence — without hype, fear, or empty promises.
Fitness Simply Explained is a free educational platform created by Olaf Henning. It connects exercise science with practical decisions, helping you understand not only what to do, but why it may make sense, where the limits are, and when context matters.
Clear Complex topics without unnecessary jargon barriers.
Evidence-informed Research, uncertainty, and practical relevance considered together.
Practical Knowledge designed for real people, goals, and routines.
Core knowledge hubs
Build understanding across connected topics
Use the main knowledge areas as learning paths. The goal is not to collect isolated tips, but to connect training, movement, the body, nutrition, and evidence.
Training Programming
Goals, exercise selection, sets, repetitions, progression, recovery, and structured decision-making.
Exercise Technique
Strength exercises explained through setup, execution, control, target muscles, and common errors.
Training Plans
Practical examples for beginners, home training, and structured sessions you can learn from.
Nutrition
Nutrition basics, food composition, practical context, and responsible interpretation.
Supplements
Supplement topics approached with attention to evidence strength, uncertainty, safety, and context.
Muscle Anatomy
Muscle structure and function translated into useful context for exercise and movement.
Exercise Physiology
Processes inside the body explained in a way that supports practical understanding of training and recovery.
Practical starting points
Move from reading to better decisions
Use practical resources to connect concepts with training sessions, exercise execution, and your next learning step.
Beginner Training Plans
Explore current beginner-friendly training examples for the gym and for home-based strength training.
Beginner training Home training Structure
Exercise Guide Library
Browse exercise categories and learn how movement setup, execution, and anatomy connect.
Technique Muscles Movement
Free Exercise Technique Checklist
Use 10 practical review points to think through exercise purpose, setup, movement control, range of motion, load, warning signs, and progression.
Free PDF 10 review points Strength training
Fitness education by Olaf Henning
Olaf Henning is a German university-trained exercise scientist and sports scientist. He holds an M.Sc. in Clinical Exercise Science, an M.A. in Sports Science, and a B.Sc. in Sport and Performance.
For nutrition-related content, Olaf also draws on additional German and European education in health-oriented nutrition, sports nutrition, and nutrition coaching. This does not imply US medical or dietetic licensure.
What you can expect here
Fitness information is often too shallow, too promotional, or unnecessarily complicated. Fitness Simply Explained aims for a more useful middle ground: clear, evidence-informed, practical, and honest about limits.
- No guaranteed muscle, health, performance, or weight-loss outcomes.
- No fear-based messaging around food, supplements, exercise, or physical symptoms.
- Context and connected reasoning instead of isolated hacks.
- Clear boundaries between general education and individualized medical or nutrition care.
Recommended starting points
Start with practical questions
Begin with a focused question, then use the connected hub pages to place the answer in a broader training, anatomy, or programming context.
Programming Strength Training
An introduction to training variables and methods used when structuring strength training.
Beginner Strength Training Routine
A beginner-focused gym routine for readers who want a clear starting structure.
Full-Body Workout Without Equipment
A home-training example for readers looking for a simple starting structure.
Pectoralis Major Anatomy
An anatomy article covering the structure and functions of the large chest muscle.
Evidence Quest: The Missing Context
Evidence becomes a world you can explore.
Evidence Quest is a story-driven action-adventure where repeated claims reshape reality, missing context leaves physical gaps, and provenance becomes a path you can follow.
In development
Start with one useful question
You do not need to understand every technical term before you begin. Pick the topic closest to your current goal, then follow the connected explanations from there.
Review your exercise technique with more structure
Request the free Exercise Technique Checklist by email. After confirming your subscription, you can download the PDF from the confirmation page.
Content scope: Fitness Simply Explained provides general educational information. It does not replace medical advice, diagnosis, treatment, individualized medical nutrition therapy, or emergency care.