I'm 47, and I don't feel that much decline, and in some ways I'm far more productive. I'm more targeted, experience makes me wiser than I was in my 20s, and the

I'm 47, and I don't feel that much decline, and in some ways I'm far more productive. I'm more targeted, experience makes me wiser than I was in my 20s, and the only thing I really notice is that I definitely have 'on' days where I'm pretty good, and 'off' days (more often than not) where I'm just kind of cloudy in comparison. I don't remember these on/off days in my 20s, however, I wasn't paying attention at all, instead chasing girls, adventure, and other unmentionables. So I may of had them then too, but I'm inclined to thing they're more pronounced now. It's also HIGHLY exercise related. The more exercise I get, the better everything works. Someone else mentioned their grandfather says 'keep moving' - This is by FAR the best advice for growing older. Keep going.. when you're a kid you don't need to do that as much, your body is going anyway.. Later in life it takes determined effort.