Yes it is very dangerous to play a 48 hour stretch of TERA. You may end up missing the last 12 hours. I'd recommend doing a 60 hour stretch, to make sure you don't miss anything.
You don't have to take my opinion though, I'm only a not doctor.
Sounds like it's time for a family intervention.
I have to admit, that it's hard sometimes to take a break when you're getting into the game and lose track of time. Set a timer or look for the auto messages from bhs. I have my own timer: my wife :) She come in and checks on me. I do no more than 2 hours at a time, then do 1-2 hour breaks to spend time with the family. I'll have a great break Saturday for my son's taekwondo tournament :)
the main thing is to just have fun and play responsible.
i pretty much did this for the first beta
it was totally worth it... ...
stock up on food and water
work out a bit so you don't get so atrophied you can't move well afterwards
eat well on thursday/friday, finish up all your work for the weekend
it's okay if you pass out for 5 hour intervals
Yes this is dangerous, only way you would be able to stay up is heavy consumption of non natrual energy products.
Also even if you were to do this it wouldn't be as enjoyable as doing 16 hours a day and 8 hours sleep... you would be to lethargic and sluggish to really enjoy it.
No its not Physically dangerous. UNLESS you forget to pee and poop and drink water and eat food and not junk food and soda REAL FOOD with vitamins and WATER. other that that you are fine! Don't go running after though ur muscles are gunna be TIGHT!!!