My karate studio is set up in the basement of a motel business, and naturally there are a lot of HVAC components is down there. There is a large boiler tucked in the corner and the ceiling is all pipes and ducts. The ductwork is large, metal and bulky… Certain parts of the ceiling is lower than others too, so the air ducts really get in the way. I never can have my students do anything that requires them to jump. Also stretches and extensions are a constant problem. There are certain parts of the studio where I always seem to hit my head on the ductwork. I try to keep an eye on it, even though I get distracted. I start teaching a group how to do snap kicks and then I end up smacking my head on the ductwork. I then start holding pads for their kicks. I slowly walk backwards down the studio and then run into another duct or pipe! When I do my own practices down there it is a problem too. Certain areas I can jump a bit, and other spots, not at all. The worst was a time when I was doing knee drops with a medicine ball. I ended up giving a little hop and smacked into a piece of ductwork. I hit it so bad that my head started bleeding and I had to quit to clean up the blood. I even left a sizeable dent in the ductwork as well. I wish the hotel would go with a ductless HVAC.