I have felt like I was brewing a cold and deferred my w7r1 from the weekend but hit the treadmill this morning really dreading it and worried I wouldn't be able to do the 25 minutes non stop. Started off thinking I might just manage 3 minutes or so but at least I tried. Well, by the time I got to 10 minutes I was really in a good rhythm and it was absolutely fine and I even speeded up from 5mph to 5.5 for the last minute. Feel great and even went for a 50 minute brisk walk later in the morning. Contrast my energetic feelings with how lethargic I felt at the weekend with no exercise. Am I getting addicted to running??