Individuals who retire become more physically active reduce their sitting time are less likely to smoke and have healthier sleep patterns when compared with people who are still working finds a new research. A major life change like retirement creates a great window of opportunity to make positive lifestyle changes -- it's a chance to get rid of bad routines and engineer new healthier behaviours said lead researcher Melody Ding senior research fellow at the University of Sydney in Australia. Here is why waiting too long to retire is not a god idea. The results of the study showed that