This is the title of a letter to the editor by HALO researcher Dr. Jean-Philippe Chaput and University of Alberta researcher Dr. Arya Sharma that was recently published in the British Journal of Nutrition.

The full citation of the paper is: Jean-Philippe Chaput and Arya M. Sharma. Is physical activity in weight management more about ‘calories in’ than ‘calories out’?. British Journal of Nutrition, Available on CJO 2011 doi:10.1017/S0007114511002844.