If you look to the right, you see My OH, click it, then click Health Tracker.
Then you need to click on the tab, Tickers and Widgets, then create a new widget, it should walk you through the process.
HW: 440.5 RNY 2/18 (Feb - 27, Mar -21, Apr -11, May -15.5, Jun - 12, Jul -14.5, Aug -9, Sept -11, Oct 6.2)