should I be concerned?

...that after two weeks of "running" (more like jog/walk/jog walk) ever other day, I've actually *gained* weight? Someone please reinforce my belief that the flab is being replaced by muscle, which we all know weighs more!

...about that wierd catch in my right knee? it just doesn't seem right that it feels like there is a rubber band snapping inside it with every other step.

...that after sitting at the computer for about 15 minutes, and stretching before that, my heart rate is still 85bpm, according to the Garmin?

I probably should be concerned about all of these things, but I'm not going to get too worked up about it. It's Friday, after all..