Mobility isn't about becoming more flexible for the sake of flexibility. It's about moving well, lifting safely, and building a body that continues to serve you long after the workout is over.

Learn how to tell the difference between normal muscle soreness, healthy fatigue, and pain after exercise so you can train smarter and avoid injury after 40.

If your only measure of progress is the number on the scale, you're overlooking some of the most meaningful changes your body can make after 40. Body composition tells a much more complete story than body weight ever will.