Two weeks ago I got delayed and had to run for a train, so running on and off over 10 minutes. A few days later, I felt I'd strained my groin but after about 4 or 5 days this settled down. Now this week I've 2 sore knees - one very sore at times but other less so, and not all the time.
I walk a lot and regularly but never run, so would the short run have affected my knees like this?
Also, is ice or heat best to apply?