In many ways, high school is still the same as it was when you were a student. The homework still sucks, the dances are still  awkward, and the lunches are still terrible. But — thankfully — a lot has also changed, particularly when it comes to what kids learn in health class. Some nutrition tips you were probably taught by your teachers have since been declared bogus. If you haven’t been to high school in a while, here are some updated health and nutrition facts for the myths you may still have lingering in your brain. BMI is a good health indicator Body Mass Index, or BMI, takes a person’s body mass then divides it by their height to determine if they are “underweight,” “normal weight,” “overweight,” or “obese.” Prior to the 2000s, school nurses and gym teachers routinely checked children’s measurements against this scale, and everyone was told this…