Side effects include increased heart rate and blood pressure, lung disease, chronic bronchitis and insulin resistance leading to type 2 diabetes.
If people are telling you to vape PLEASE please don't do it. It's bad and not the right thing to do. I have experienced this in my old school, and I just don't understand why people do it. It's not good for your health, and could eventually kill you. It can also lead to smoking which is pretty much the same thing as vaping cause you are still smoking nicotine. Even if you get it without it, it is still bad to do it. PLEASE don't ever try it.
Hope this helps, have a good day. c;