Fitness Science
Fat Loss and Muscle Basics
Fat loss requires a calorie deficit, but muscle retention requires strength training and adequate protein. This page connects the core principles so you can lose fat without losing muscle.
Fat LossMuscleExpectations
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Fitness Science
Browse Fitness Science
Understand fat loss and muscle building basics — calorie deficit, protein needs, and training principles that actually work. See the science hub for the bigger picture.
Fitness Science
Strength Training Science
Learn why muscle-building principles matter during fat loss.
Fitness Science
Beginner Workout Plans
See how these ideas fit inside a practical week.
Fitness Science
Home Workout Plans
Use a simple home-friendly structure if equipment is limited.
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Turn Theory Into a Repeatable Plan
Most people do better with a simple routine and realistic weekly targets than more explanation alone.
View Beginner Workout Plans