I think it just varies from person to person since we all have different digestive systems. For example, my husband is 5'11 and if he eats one of my fiber bars he'll be on the toilet for hours; though if I eat the same fiber bar, it won't affect me like that at all. I try and eat about 25-27 grams of fiber a day and I'm 5'3. I believe it's all personal choice and knowing your body.
|