After riding a spinning bike, my calf is sore and not as strong as before. It is more difficult to go upstairs than before.
Too much exercise. In my experience, you should adjust your training method and ride in a gentle way, but you must sweat until it lasts for more than 40 minutes. After all, it is aerobic exercise. The so-called spinning bike is just more fun. You can listen to music or watch TV. The episode is just right. Don't go on like that, lest you hurt your ankle!