There are several advantages to employing a 12-speed bike on an indoor trainer. One such advantage is the ability to practice with a bike that has grown accustomed to riding outdoors. Additionally,22 it permits a broader range of gearing options which is advantageous when attempting to replicate certain inclines or while utilizing resistance training. Furthermore, if you possess a single chainring gravel bike, utilizing a 12-speed bike offers lower gearing possibilities making virtual steep climbs easier and less strenuous to your legs.