Answer:
By using S>T>O>P you should first remind your friend how it's not safe to and if they call you a coward just tell them the accidents and how it will affect them and they may regret they're life decisions based on what they are going to do.
Explanation:
As you know doing such stuff may be unsafe and may effect your body by hurting or injurying yourself so tell your friends about how they shouldnt do it without parental supervision of any sort and make sure she wears saftey gears if she plans on actually doing it.
Answer:
the way you worded it is a little strange but the word I think you are looking for is holding.
Answer:
Neurologists are specialists who treat diseases of the brain and spinal cord, peripheral nerves and muscles
