Weight reduction can be accomplished either by eating fewer calories or by consuming more calories with physical movement, ideally both. (onedaytop.com)
More accurately, a pound of muscle at rest consumes more calories in a day than a pound of fat. (weightlosstriumph.com)
Because, as I'm about to show you, when people consume more calories they gain weight and when they eat fewer calories they lose weight. (physiqonomics.com)