[chimprich]

You can contrast the odds of getting injured with the health benefits. The cardiovascular benefits would seem to outweigh the risks of getting injured from a mathematical point of view.

See e.g. https://blogs.bmj.com/bjsm/2018/12/12/pedal-power-the-health...

[kenjackson]

Lots of ways to get even better cardio benefits with much less risk.