Instructions
Open your "Sims 3" game and navigate to "Buy Mode." Purchase an item that gives your Sim athletic points, such as a treadmill, pool or stereo.
Click on the athletic item, then select "Work Out." Continue to work out until your Sim reaches level 1 in athletic. You will receive an event at the upper right corner of the screen when this happens.
Click on the magnify glass located in the lower left corner of the screen to view the city map. Click on a location, such as the park. Several options will appear, including "Visit Park Alone," "Visit Park With..." and "Jog to Park." Select the "Jog to Park" option and your Sim will begin jogging.