100-mile challenge?

I was doing Leslie Sansone's 5-Mile Advanced Walk this morning, and I was wondering about trying to do a 100-mile challenge. It would be like her 10-day challenge, but I would do her 5-mile video twice a day, and walk another mile in addition to that (since her 5-mile workout is really closer to 4.5 miles, according to my heartrate monitor), every day. I'm not really sure if I can quite do that, it might wear me out! I suppose I can *try* to see if I have time to do the workout again this evening.

And after doing this workout 20 times in 10 days, I might want to never look at it again!

I'll think about it.

And on my Babyfit daily email today, the topic was your exercise program could be wearing you out. Hmm!