 People in their 40s, that's when you start feeling more of those aches and pains like you've never felt before. You think you're getting older. And again, it's important for your hormones and to keep yourself physically active. And of course, when you're in your 50s, you start feeling stiffer. You can't golf. You can't play tennis. You start becoming aware of your body not functioning. And then people over 60, I just wish that every senior citizen would go on this formula