Thanks, Sona. Yes, I did devise it on my own. I'm having a minor problem, though. Around the time I got the treadmill and starting using it on a regular basis, my feet started hurting -- mostly the ball of my foot. At first I thought it might be caused . . . dare I say it . . . by my 4" heels. But, I was off work almost all last week and didn't wear them. And the pain was really bad Sunday night. I had done every other day last week, then a full workout on Saturday, and a 40-minute "endurance" on Sunday.

Think I need better shoes? I'm wearing name-brand (don't ask me the name -- if it's not something like Etienne Aigner or Anne Klein, I pay no attention!) shoes designed for walking. Maybe I need to get ones with more support and padding and that are made for running.

Thoughts?