More running

This morning I spent 30 minutes running on the treadmill (2.21 mi), then 20 minutes on the elliptical. I can tell I've work out, but I don't feel as wiped out as I did after my 45-minute run a couple days ago. Guess I need to work my way back up to that time more slowly.

I've been checking out some half marathon training programs online, and the ones for running start with the premise that the person has been running 30 minutes 3-4 times a week for a while to buld the endurance base. Although I have a pretty decent endurance base with the elliptical work, I need to fine-tune it some more with the running, it sounds like.