Key takeaway:
Brief explanation: The relationship between physical activity and adequate nutrition is based on energy balance, where energy intake from food should ideally match or slightly exceed energy expenditure from activity and bodily functions to maintain health.
Points to consider:
- I. Energy Value: The energy value of food consumed daily should be greater than the energy expended during that time.
- II. Rational Nutrition: For nutrition to be rational, three important components must be considered: the energy that comes from food, the energy reserves already in the body, and energy expenditure.
- III. Determining Needs: If we know our energy expenditure, we can determine how much food is needed to restore the spent energy.