Personal trainers are trained to teach you about exercise – not just how to do it, but why. And since fitness is 80% nutrition and 20% exercise, it is important to have a good eating plan – best done by someone who really knows it. Proper nutrition is fundamental to achieve your goals. Many are not aware of certain eating and drinking patterns and they overlook many calories, for example the one or two glasses of wine in the evening that do not allow you to lose weight despite you only have salad. Your personal trainer will find these weak points immediately.