Scale? You don't need a scale. Well, i don't use one but i eat healthy. I make research on fruits and vegetable that will give me the nutrients i want at a particular time. If i feel i have a lot of calories in me, i have a fruit or vegetable for that. If i feel i just eat junk food and i need to clean my digestive system also their is a fruit or vegetable for that too. All i just do is make research and know what to eat to solve my problem.