Rotating equipment likes to grab uncontrolled hair. A lathe, for instance will grab your hair and smash your face into the chuck faster than you can react. See link
You should tie up long hair in a science lab to keep it from dragging through your experiments, or being lit up by a Bunsen burner.
You can braid it or tie it on 2 sides or you can tie it up or you can tie it over your shoulder on 1 side
tie it up
It's so hair doesn't dangle in the chemicals, are some are dangerous.
Put it up in a braid to prevent knots.
You grab a brush and pull back your hair and then tie it with a hair tie or rubber band.
You can tie it up loosely, but make sure you wait for your hair to cool down, so its not warm when you tie it up, otherwise it will get a kink in it.
Up to the skater, if it gets in your way then put it up if not then leave it down and rock it
The hair tie is made up of small peices of elastic covered in soft and strechy fabric sewn togather.
yes it's ok to tie it up
I don't think so. Your hair will not grow faster if it is tied up. If you tie it too tightly though you will do damage and could cause your hair to fall out because of traction on the hair.
bunch it up :)