Sticking to a healthy diet was simple in ancient times, when physicians like Hippocrates and the Roman doctor Galen—who studied obesity-related diseases 1,800 years ago—advised the masses on how to achieve wellness. According to David Zulberg, author of The 5 Skinny Habits, these classic approaches may be key to staying slim in the 21st century.
See the slideshow on Readers Digest – http://www.rd.com/slideshows/lose-weight-habits/#slideshow=slide1