September 19, 2013 7:52 am Fitness and Facebook: Weight Loss Inspiration Online Fitness trainers are encouraging the use of Facebook to keep their clients motivated. People are posting and sharing pictures of food, themselves and even the numbers on the scale. US & World Videos 1:16 National recognition for a Bay Area teen fighting big tobacco 1:11 Total body nuclear medicine PET scan continues to evolve 1:02 Google productivity expert authors guide to boost wellness 2:23 Watch: Feeling and showing the impact of organ donation 1:07 Watch: Autism specialist discusses rise in children on the spectrum