Bicycling will actually help you feel better, but it's most crucial what you do after your ride. You want to be going home after your ride. Riding speeds up your metabolism and regenerates your bodys healing process. After you ride sick, go home drink something good for you, take a hot shower and stay warm, eat healthy food and relax. Accellerating your metabolism will quicken your bodys healing process. This formula will only pertain to a person who is normally above average health. You can speed up the healing process. It's the rest that you get after your ride and what you ingest into your body that's going to make the difference.