With my car, the exhaust fell off due to rust. The mechanic said the problem was caused by only using the car for short trips, something about the exhaust getting wet but never drying out, so it eventually rusted. Are there any similar issues with bikes? I'm trying to ride more but there are times when I might only be able to go out for (or only feel like going out for) a short time eg. 10 - 15 minutes (or less). It is all good practice, but not if I'm doing harm to the bike. Thanks.