Howe Many Hairs Does A Man Have On His Head And How Many Hairs Does A Woman Have On Hear Head?

Howe many hairs does a man have on his head and how many hairs does a woman have on her head? Me and my friend were watching a music video of R.E.M. from back when Michael Stipe had hair. My friend said "That was twenty-five years ago and a about five-million hairs ago." And that made me wonder how many hairs does a person have on their head.