When I was 16 I tore my ACL, MCL, and lateral meniscus playing football. Needless to say it's been about 11 years since I have been able to run full speed. Friday night I was on vacation and staying at this huge hotel with the longest hallways I had ever seen. We all had a few drinks and I was walking around barefoot when I got the idea to start running sprints down the halls, which turned into races all over the hotel. I was running as fast as I could, my strides may have been a little shorter than I wanted, but I was running, and winning. I beat everybody in the race. I very well may have been the fastest "fat kid" around back in the day and I still have the ability to boogie, but I can't run in shoes. I desperately would like to start doing sprints and some other drills for some cardio, and was just wondering if it would be ok to run them barefooot? Would I be putting other parts of my legs/feet at risk by ng this, or is this something that is done often? Any feedback would be great. Thanks.