My body is late 60s but my mind is much younger so I have to "walk my age." Rule #1. LOOK DOWN WHEN WALKING. Chair exercises such as holding a chair back and doing squats and one leg standing coupled with toe touches concentrating on your hamstrings to stand up are quality strength movements. Throw in some calf raises as well. The stronger your legs are, the better they can react and keep one from falling. I have had to teach myself instead of just spinning on one foot to turn, I do small steps to turn. I call it my "old guy 3 point turn." Sure beats hitting the floor.