What are some common misconceptions about diet and fitness? ~

Diets work.  They usually do not.  Nothing in the quick-fix area will work on the body.  Life style changes are the only answer.

The more you exercise the fitter you are.  TOTAL nonsense.  The more you exercise, the more you need to stretch before and after and the more you have to cross-train as well.  

You are young; therefore, eating junk food is o.k.  You'll just burn it off.
That if you jog and swim everyday and take diet pills you will loose weight and your body will be o.k.
That starving yourself and/or fasting is a good way to loose weight and you won't have to excersise.

Starving yourself is a sure fire way to lose weight.

That a weight loss diet is the only kind of diet there is. That being thin means you are healthy. That walking a few minutes a day is all the exercise you need.  That fitness and healthy eating are too hard.