When we ride a bike too fast why do tears fall from our eyes. What is going on biologically and what may the evolutionary story be behind this?
This quora Q&A gives a few ideas, none of which satisfy my question fully.
- This is similar to a response to smoke.
- But this is clean air? Why doesn't this happen all the time?
- Our eyes always need to be lubricated.
- But why the need for excess tears?