Go Ahead: Exercise!

It's the summer time and exercise is a great way to spend your time. I had thought that jogging would be bad for one's knees, but this article in ScienceDaily notes that jogging isn't too bad on your knees. We all know that exercise is good for you in many ways: better fitness for less illness (exercise helps your immune system), lowers the incidences of depression, release of endorphins that make you feel good, and just generally boosts your spirits.

So, get out and have fun.