When is too old too old?

When everyone else is the class is late 20's and early 30's is that when the grandma feels old? Missed one week of dance class and was absolutely lost. The 50 something brain has trouble getting passed the 3rd count of 8. Weird how we all have a different styles of learning. I need to see it, do it and write it down before the memory fades. So 30 something gals watch out for my steps next week. By the way, where were my other 40 - 50 something tappin gal friends? Are you ditchin me?