Why is it that every time I have a long day out onthe bike, my fingernails and beard always seem to grow much faster??
I'm confused, but have noticed it for a number of years now.
Any ideas?

Increased blood flow is what I always though.

so other people have noticed this as well then. Its not some new mutant power of hair and nail growth Ive discovered.
Bugger – I thought I was special 😉

Dehydaration causing your skin to shrink?

Getting yourself covered in shit?

Exercise promotes the release of growth hormone, I believe.

Exercise promotes the release of growth hormone, I believe.

I wish I'd known that when I was about fifteen. 😉

And I have noticed it too, especially with the facial hair.

It doesn't make you any taller ultimately though 🙂

Is it because you get more sun?

Just like a lawn, really: more sun & more rain = more growth.
🙂