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.
The heart<span> cannot pump blood effectively and some blood backs up into the body . This is called congestive </span>heart failure<span>. Having a </span>heart attack<span> means that you have lost blood flow to a part of the </span>heart<span>, and this has caused some </span>heart<span> muscle to die</span>