Riding a bike is commonly understood as a way to practice aerobic exercise since there is not need to carry too much weight and its design eases riding even for fat people. Nevertheless, there are improvements like rear racks, bicycle trailers or bags which make it even light. From a healthy point of view, studies across the world have been done to determine to which degree riding is beneficial to people. The overwhelming literature conclude how good is to ride. By making regular cycling, the risk of death from all causes is cut by more than 40% and the reduction in the risk of cancer and heart disease is 45% (https://www.bmj.com/content/357/bmj.j1456). Mental health is also boost by biking. And the benefits are not only experienced by individuals’ health, but also the whole society (https://www.theguardian.com/environment/2017/dec/04/death-air-pollution-cut-if-uk-hits-walking-and-cycling-targets).
Just to name one paper, a scientific study (among others) (https://www.theguardian.com/lifeandstyle/2018/mar/08/cycling-keeps-your-immune-system-young-study-finds) demonstrates that cycling makes younger the immune system. Kind of rejuvenate oneself. It is marvelous. Moreover, it preserves muscles and helps maintaining controlled levels of body fat and cholesterol. Better than taking drugs, biking is an excellent allied for senior citizens. There is no need to use face creams to hold back the effects of ageing. Just ride a bicycle!