It's always a good idea to maintain your bike. Check the air in the tires. Check the brakes. Check the gears. If you don't have tools you can use the bike fixit station in the southwest corner of the covered parking at the HPER building. If you don't know how to fix your bike take it to a bike shop. The closest one to UNO is the Trek Bicycle Store of Omaha, 7214 Jones Street Omaha, NE 68114, (402) 884-1820.