I don't know, but now I'm really nervous about talking with my pdoc, because what good would it do for me if it makes you feel like this?

Then, of course, you might be overreacting and over-analyzing your symptoms. Sitting leading to two years less of your life? Who is going to look at your corpse and say, "hm, you know she would have lived two years longer hadn't she been sitting on her butt when she could have been bungee jumping." idk, perspectives I guess.