What time of day is better for working out? I've heard that it's better to get up early in the morning and get in a half hour of cardio, but I don't usually have a lot of energy until the late afternoon or evening. Does it matter what time I work out?

I've been thinking for a while that I might like to run in a marathon or walk in the *** cancer 3-day. I've participated in 5k and 10k's before, but I've never kept on going for miles and miles and miles like I would need to for something like that. Does anyone have any idea how long...

Has anyone here tried dance aerobics or actual dance classes as a way to lose weight? I seem to have two left feet, but I accidentally wandered into one of the dance classes - hip hop, I think - and I've never had so much fun in my life. I doubt I was doing much of it right and I had to look like...