Yes I do! The thought was there and even one minute is greater than none. You have to be kind and appreciate all your effort, no matter how minimal it seems.
No, i dont think I count exercise when i do not complete it. Sometimes i do count exercises when i have completed major portion of the exercise and not the last 10-15 minutes. Sometimes I dont do cool down exercises. Because of laziness or i am always in hurry to run back home.
Depending of how further I am into the exercise. If I'm interrupted in the last 15 min of a 60 min it's a yes, if I'm interrupted in the first 5 min? No
I believe that you should just count it because if you are interrupted you can still do that exercise again the next time you exercise