In our world of eating out and mammoth portion sizes, it can be difficult to keep your calorie count within a healthy range. Luckily, you don't need to carry around a serving size chart with you, because you already have a convenient one right on your body: your hand.
This "handy" infographic from Guard Your Health shows you how to use your palm and five fingers to keep your portions under control. For example, if you want to add some butter to your toast or corn, keep it to the size of your fingertip. Looking to indulge in some meat? Look down at your palm for the recommended serving size.
(Click the image for a larger version.)