Your future doctor is using ChatGPT to pass medical school, so you better start riding a bike and eating healthy now.
@Shanmonster @duanegran different people have different needs. For most people about 5km is the threshold between "quick and easy ride" and "effort and sweating involved, and time invest".
If you like to walk - go ahead. If you like to ride longer than 5km - feel free. But please don't assume your preferences would be good for everybody.