Serendipitous. I have been feeling great this week also, faster and strong. Except today when I rode a bike I am not used to, or I was just tired.
I have been starting to think about training harder, so try to figure out how to use intervals along my commute and the other things necessary. I need to get a computer with a clock I think, cadence would be nice also.
I need to take more time to do active training and ride with faster groups. But I think that good rests are important and working hard when you need to also helps.
I have started swimming regularly again and I think that improvement in core strength is important and makes a difference on the bike.