Answer: Monitoring your heart rate is important, because it reflects your overall health. The lower the heart rate the better, but obvisouly it can't go past a certain point. It shows basic body function and general fitness. It can indicate any abnormalities or health issues.
I would say 1. Apple juice may contain vitamins, but it lacks fibre which is necessary to regulate our blood glucose.
A. Muscle Fitness
I believe this is it.
The only way anyone is able to know exactly what is in a product is to either do a lot of studying on the matter of read the nutrition label. Be warned however, because while companies are not allowed to falsify information on the label, they can mislead people by splitting up a package into servings or requiring a separate ingredient.