Guides
Practical, research-based guides on training, nutrition and recovery. Each article lists the studies and official sources it is based on.
Sleep and Muscle Growth: How Much Sleep Lifters Need
How sleep affects muscle growth, fat loss and strength, and practical steps to sleep better as someone who trains.
Stress and Fitness: How Stress Affects Your Gains and Fat Loss
How mental and physical stress affect recovery, cortisol, appetite and training results, with practical ways to manage it.
Hormone Balance for Fitness: Testosterone, Cortisol and Insulin Naturally
How lifestyle affects the hormones that matter for training, including testosterone, cortisol, insulin, thyroid and growth hormone.
Recovery and Deload Weeks: How to Recover Between Workouts
How to recover between workouts, when to take a deload week, and which recovery methods are worth your time.
Progressive Overload: The Rule Behind Every Program That Works
What progressive overload is, the different ways to apply it, and how to track it so you keep getting stronger and bigger.
How Much Protein Do You Need to Build Muscle?
Evidence-based daily protein targets for muscle gain and fat loss, how to split protein across meals, and the best food sources.
How to Calculate Your Macros: Step-by-Step Guide
A simple step-by-step method to calculate your calories, protein, fat and carbohydrates for bulking, cutting or maintenance.
Bulking vs Cutting: Which Should You Do First?
How to decide whether to bulk, cut or recomp based on your body fat, training experience and goals.
Creatine Monohydrate: Benefits, Dosage and Safety
What creatine monohydrate does, how much to take, whether to load it, and what research says about safety.
The Best Workout Split for Beginners
Which workout split beginners should start with, how many days to train, and when to move to a more advanced program.
How Many Sets Per Muscle Per Week to Build Muscle?
How much weekly training volume you need per muscle group for growth, how to count sets, and how to adjust volume over time.