è Lesson 1 + Lesson 2 + Lesson 3 + Lesson 4 + Lesson 5 + Lesson 6 + Lesson 7 + Lesson 8 + Lesson 9 + Lesson 10 + Lesson 11 + Test Yourself
Lesson 1: A Challenge Worth Accepting
As each of us grows older, our risk of falling goes up. The numbers tell the story. Every year, one in every three Americans over age 65 takes a fall. That's about 10 million falls every year.