I love to start the day with physical exercise - I just feel GREAT for the rest of that day. Hard to do with two small kids, though.
Have to echo this, although our two small kids have grown up and (mostly) moved on.
In winter, it's really easy to pack on an extra 20. These days I hit the treadmill 2 times a day for 30 min ea. I first tried for one hour when I got home from work each day, but I found that if I do 30 - 45 min right after my first cup of coffee at 5:00AM. I feel great all day as a result. I do another 30 to 60 when I get home. Combined with close-to-the-Earth eating, my weight is controlled during the winter.
Interesting to see HJ's post that sheds some light on the science of it. Thanks for posting it. A few more sips of coffee and I'm heading for the basement to go nowhere fast.