PUBLISHED: 12:10 PM on Wednesday, January 4, 2006 Sidewalk Poll: What do you do for exercise?   Andrea Reynolds I walk three times a week and do yoga two times a week.   Vicky R. Johnson Yoga - it's easy!   Scott Fischer Ride bicycles both outside and stationary bike in the garage. Hike and run trails, skate, ski, alpine ski and back country ski.   Barb Lindh Ski, hike, run, bike, spin at racquet club, body pump, aerobics - whatever I can do despite the weather and unforeseen circumstances!   Dianna Ashton Run from bears.   Jennie Vinson I try to play hockey or even occasionally jogging. Both involve a lot of sliding or falling on the ice. I've gotten good at landing though.