The "What Are You Doing This Moment" Thread

Do you mean pre or post run stretching? I'm a believer that the latter isn't especially useful and that the former, at best, also does little, but can often increase the risk of injury. I don't run much these days but I used to go a fair bit. Things improved lots when I stopped stretching beforehand. Now I just do what I do before deadlifts/squats which is bodyweight squats, cossack lunges and leg swings followed by warm up sets (in the case of running that'd be brisk walking for a a couple of minutes, old man jogging for a couple and then running).

Stretching is one of those things that you benefit more from doing just to stay limber, rather than as a before/after thing. Personally I believe that if you warm up properly (like you mentioned), pre-workout stretching is unnecessary. Some really light stretching after a strenuous workout or long run might be good for relieving some impending muscle stiffness, but it is one of those things that you need to feel rather than just following black and white guidelines.
 
The greatest advice I ever got for staying reasonably 'fit' is changing your day to day motions. I.e., stretch out a leg and arch your back when you're opening the fridge. Skip sometimes. Contort yourself in weird ways when you're bending over to pick something up. Trapeze along parking blocks instead of walking on the concrete. Plus it's more fun.
 
Contort yourself in weird ways when you're bending over to pick something up.

This is really good advice on how to injure your back as even small things can put a lot of strain on your back muscles if you try to lift them while bent in a weird way. Don't do this unless you want to enjoy a good back injury, as this makes injury significantly more likely.