David Baillie is a contributing writer for Exercise.com and is a certified personal trainer with a diploma in nutrition and weight management. He is the founder of Front-Line Fitness, a fitness and nutrition company that specializes in helping people get into the best shape of their lives and live life to the fullest. In his free time, David enjoys taking road trips across the USA in his bright yellow Chevy pick-up truck, affectionately known as Bumblebee. You can reach David at Davidbaillie@front-