Staying up for 48 hours or even 24 hours is not good for you or anyone's health and well being.
When you stay up late and for 48 hours your body will suffer, you'll get confused, have high blood pressure, slower reaction times, not be as alert and much more.
You risk increasing your chance of developing health problems such as heart disease, stroke and even a heart attack from staying up for 48 hours at a time.
I've done it before because I thought it was cool to do and wanted to try it out in my teen years and I regret doing so.
I felt awful afterwards and it took me some catching up on sleep during the day to finally get enough rest again so I felt energized again.