NEAT

Non-Exercise Activity Thermogenesis (NEAT) is energy from daily movement outside planned workouts.

What moves it

Driver	Direction	Example effect
Step count	Higher steps → higher NEAT	+2,000 steps/day adds roughly 80–120 kcal/day for many adults.
Breaks in sitting	More breaks → higher NEAT	Short standing or walking bursts raise burn slightly.
Job and habits	Active lifestyle → higher NEAT	On-feet work beats desk time.

Fuel tracks step count and movement from wearables to model NEAT and adjust calories.

Total Daily Energy Expenditure (TDEE) is the sum of calories you burn each day.

Active Calories are calories burned above resting during movement and exercise.

Step Count tracks daily movement and is a simple proxy for NEAT.