Running Week - Day 2

I tried running this morning. Apparently, my bones aren't ready for that kind of thing. I was trying to do the Couch to 5k, so I started with 5 minutes of brisk walking and then tried alternating 60 seconds of running with 90 seconds of walking. As soon as I started running, my left tibia was protesting. It was so bad that I was limp-running. I tried it a couple more times, but it was just too much, so I walked the whole way home. I was out for 20 minutes, though, so I know that was good. I guess I'm just going to have to walk more and build up what my leg can handle.