Health Myth: Being Skinny Means Being Healthy

"Internal fat poses a risk to people who don't appear to have risk factors from the outside. Forty-five percent of women and sixty percent of men studied with normal BMI’s were found to have excessive levels of internal fat.

The study also showed that people who maintain healthy eating habits but are not active are most likely to have excessive internal fat, as well as people with sugary diets." - Data From Britain’s Medical Research Council

Read the full article here.

One way to build up internal fat, especially on the liver, is to consume high-fructose corn syrup and refined sugar. 

If you're skinny and drinking sugary drinks, there is a pretty high chance that you have internal fat.