Celebrities pay their trainers a lot of money to keep them in shape — even if it means that part of the process is giving up their favorite foods. We spoke to the trainers that work with high-profile clients like Jessica Biel, Brooklyn Decker, and Jennifer Garner to find out which foods were absolutely off-limits as far as they're concerned. While most of these might not surprise you, do you think you could give them up for good? Subscribe to POPSUGAR Fitness! www.youtube.com/subscription_center?add_user=popsugartvfit Visit our website for more great workouts and fitness tips! www.fitsugar.com Are we friends yet? Join us on Facebook! www.facebook.com/POPSUGARFitness Get the latest updates via Twitter! twitter.com/#!/POPSUGARFitness