Energy expenditure is considered as a continuous function and a variable dependent on the nature and the intensity of body activity, environmental condition, previous exercise and time after meal. The information available on energy expenditure patterns during adolescence is however scanty.   In view of the paucity of data on the nutritional status and energy intake and expenditure pattern of adolescents, the present study was undertaken.   A sample of 400 adolescent girls belonging to 13 to 18 years were selected from urban and rural areas of Bangalore, Karnataka.   Nutritional status including energy balance was assessed.   Energy balance was calculated by 24 hour activity pattern.  Seventy eight per cent of the urban respondents were found to be in positive energy balance with a mean energy intake of 1959 Kcals.   Negative energy balance was observed among thirty five per cent of the rural respondents with a mean energy intake of 1834 Kcals.   This could be attributed to low energy intake and increased activity pattern among rural respondents.   Mean weight of the rural respondents being 41.4kg was found to be lower when compared to nchs standard.  The fact that 35 per cent of rural girls having negative energy balance is a matter of concern as these girls enter into their reproductive journey, with lower body weight and negative energy ba