Getty. Much like the rest of your body, your hair goes through changes as you get older. The hair cycle -- rest, shed and grow -- slow downs, and can lead to hair loss, which can be very traumatizing. Your hair changes every seven years, explains women's hair restoration expert Lucinda Ellery. There are 150,000-200,000 hairs on our heads; we actually shed 100 a day, 36,000 in a year on average.
Definitions of yardstick. 1. measuring stick consisting of a strip of wood or metal or plastic with a straight edge that is used for drawing straight lines and measuring lengths.
a tuft of hair at the end of the tail of some animals, as of the cow or lion. to whip or beat with a switch or the like; lash: He switched the boy with a cane. to move, swing, or whisk (a cane, a fishing line, etc.) with a swift, lashing stroke. to shift or exchange: The two girls switched their lunch boxes.