At first, I felt a bit intimidated by all the scientific terms, but I'm glad I pushed through, and you did quite an excellent job at transcribing it to plain language :D [blushing] Back in my before-kids life, I used to take long walks with my husband. We would spend almost all of our free time walking through the city, and it's been the time when I felt in my best shape! Hours of walking, we made time for it, and we hope we'll get back to it once our son can keep up with us.