Lately I've noticed that it takes me longer to warm up than it used to. Typically, I'd need 15 or 20 minutes warm-up before I could push, get my cadence up where it belongs, and start to feel comfortable.. These days it's closer to 40 - 45 minutes. The good part is, however, that with the 40 to 45 minute warm-up I can ride faster, stronger and longer than I've been able to ride in the past three years. Maybe I needed to warm-up longer in years past, but just didn't know it. I'm interested in the experience of other 50+ when it comes to warm-up and performance.