"Calories in vs calories out" is really just Occam's razor in action an hence helpful. At least it was helpful to me to re-engineer my lifestyle from 10h TV per

"Calories in vs calories out" is really just Occam's razor in action an hence helpful. At least it was helpful to me to re-engineer my lifestyle from 10h TV per day and fastfood as a teenager to regular workouts and healthy food.