
A calorie is a unit of energy. In nutrition, it refers to a kilocalorie (kcal) — the energy needed to raise 1kg of water by 1°C.
Energy balance:
Total Daily Energy Expenditure (TDEE) components:
Key insight: NEAT is highly variable and underestimated. Fidgeting, walking, standing — these add up significantly.
Reference:
TaskLoco™ — The Sticky Note GOAT