That's been my problem. I have played sports since I was 4 and stopped playing at 18. I'm now 21 and haven't really done anything physical since. Running has been nice but I haven't gone in a little while. Will be going again tomorrow. I worked my way up to 2.5 miles, but I am wondering how much of that I lost by not running for a few weeks! Time to start eating right and exercising, then weight lifting!