A few years ago, I started tripping when walking trails ; like over a riot in the trail. What happened was I was just falling not even catching myself before falling to the ground. That concerned me on two levels, but the most important was I wanted to have good arm strength so as not to break bones. I started a strength training program. I go once a week and sometimes twice a week. It has made a huge difference in how I feel. I think the tripping was due to balance which the training has helped too. I feel great and toning up very nice,y with my weight loss. Exercise is very important- Just Move.