What each one does
Calorie counting tracks energy in. Over weeks, eating fewer calories than you use leads to weight loss and more leads to gain, whatever the food is. Macro tracking splits those calories into protein, carbohydrate and fat. It matters for body composition (keeping muscle while losing fat needs enough protein), for training (carbohydrate fuels hard sessions) and for appetite (protein and fibre fill you up).Which to choose
- Losing weight: a calorie target plus a protein minimum. Carbs and fat can float.
- Building muscle: protein first, a small calorie surplus, the rest flexible.
- Endurance training: enough total energy and carbohydrate around sessions.
- Just eating better: protein and fibre targets often do more than counting anything else.
Tracking all three macros precisely is a lot of work and rarely needed. One firm number and one loose one is easier to keep up, and the habit you keep beats the perfect plan you drop.
How Life OS handles it
Life OS sets a calorie target and a protein target from your goal, weight and training, shows both as rings, and logs meals from a photo or barcode. Carbs and fat are there when you want them, not in your face when you don't.
Questions people ask
Is macro tracking better than calorie counting?
For weight alone, calories are what matter. For keeping muscle, training and appetite, protein matters too. A calorie target plus a protein minimum covers most goals with far less effort than tracking every macro.
Do I need to track carbs and fat?
Rarely. Unless you have a specific training or medical reason, letting carbs and fat float inside a calorie target works well.
What should I track to lose fat but keep muscle?
A modest calorie deficit and a protein target of around 1.6 g per kg of body weight, with strength training.