No, both grows indefinitely, it's just that head hair takes more time to fall off This was just asked and answered in /r/askscience https://www.reddit.com/r/a

No, both grows indefinitely, it's just that head hair takes more time to fall off This was just asked and answered in /r/askscience https://www.reddit.com/r/askscience/comments/1c6zztu/why_does_arm_and_leg_hair_have_a_growth_limit/ https://www.reddit.com/r/askscience/comments/1c6zztu/why_doe...