While there are some general health habits that are important our whole life through (eat well, drink water, be active and get tested), there are specific ones we should develop depending on our age. A 20-year-old's fitness routine will be different once she enters her 40s and a 30-year-old woman will have to adjust her dietary needs once she decides to bear children. Even the medical tests you should ask for change as you age and your body becomes susceptible to different health risks. So be prepared: here's how to get and maintain your best body through your 20s, 30s, 40s and beyond!Image: optimisticthinking.wordpress.com