Energy requirements for different categories of people:

a) Light activities: personal care, sitting, standing, slowly moving around (120-150 kcal)

b) Light to moderate activities  domestic work, yard work, light work, walking (150-300 kcal)

c) Moderate activities :300-420 kcal

d)Heavy activities : 20-600 kcal

e) General formula : women 0.9kcal/kg body wt./hr, Men 1kcal/kg body wt./hr.