Energy and nutrient density

The amount of matter packed into a given space. It's like how tightly packed the molecules are.

The amount of energy contained within a small portion of food. It's like how much 'fuel' is in a bite.

Foods that are packed with vitamins and minerals, even if they don't have a lot of calories. It's like a nutritional powerhouse.

These foods are both high in calories and nutrient rich. Think of them as a good source of both energy and healthy stuff.

Foods that are mostly empty calories, meaning they provide little to no nutritional value. It's like eating just sugar.

These are the internal fuels your body uses for energy. Glucose is a simple sugar, and fatty acids are stored energy.

The balance between the calories you consume and the calories you burn. Like keeping your bank account balanced with income and spending.

These are tools that help you track your food intake and estimate how many calories you're consuming. Like a food diary for your energy.

The way your body stores extra energy it doesn't use right away. Like keeping extra 'fuel' in reserve.