Master CICO & Unlock Clean Muscle Growth
Understand energy balance, calculate your exact TDEE surplus for hypertrophy, and fuel your body for maximum strength gains.
Understanding CICO (Calories In, Calories Out)
The absolute foundation of body composition management. No matter the diet style, thermodynamics always govern your weight changes.
Calories In
The energy consumed through food and beverages. Every macronutrient (protein, carbs, fats) and alcohol provides thermal energy measured in kilocalories.
Calories Out (TDEE)
Total Daily Energy Expenditure consists of BMR (basal metabolic rate), NEAT (non-exercise activity), TEF (thermic effect of food), and EAT (exercise activity).
The Balance
Consume more than you burn = Surplus (weight/muscle gain). Consume less = Deficit (fat loss). Balance equals maintenance weight.
Muscle Gain (Hypertrophy) Principles
Building muscle requires more than just eating in a surplus; your body needs the right chemical and mechanical signals.
Progressive Overload
Muscles will only grow if forced to adapt to a tension overload greater than previously experienced. This means gradually increasing weight, reps, or improving form over time in your resistance training routines.
Sufficient Protein & Surplus
Protein provides the essential amino acids to repair and synthesize muscle tissue. Aim for roughly 0.8g to 1.0g of protein per pound of body weight, paired with a modest calorie surplus (250–500 kcal) to minimize unwanted fat gain.
Interactive TDEE & Muscle Gain Calculator
Estimate your daily energy expenditure and discover your optimal surplus calories and protein target.