How many green gs should a person eat as, say a snack? And if I eat an apple every morning, and >>>>?

My mom uses the zip-lock snack size bags and fills them up with gs. She eats very healthy and says these smaller bags are exactly a serving size - I think it's actually a cup. Check out www.mypyramid.gov You can enter your age and height and activity level and it will tell you how many servings are recommended for you and what the actual serving sizes are.