Guide
Calories, simply explained
Calories are a unit of energy. Everything you eat gives you some. Everything you do uses some.
Energy in, energy out
If you consistently take in more energy than you use, your body stores the excess. If you use more than you take in, you gradually lose stored energy. That's the whole model.
Where walking fits
Walking burns modest calories per session - but done daily, it adds up to a meaningful energy expenditure without wrecking your appetite the way intense exercise sometimes can.
Numbers vs habits
Don't obsess over the count. Focus on the habits - Fitowa tracks the numbers for you.