I know I've been there and yes I have done that, it might be great fun and you catch all the awesome gaming time with our friends or level up on a character you have been wanting to do. But staying up past 12 AM is just looking for trouble, you might be thinking to yourself you're young and you can do what ever you want now but trust me when I say this, when you get older even at the age of 22 you start to feel that your body is battling to keep up with your 3 day long stand with no sleep.
Like I said above I've been there and I have gotten all the medals and even though it was great fun I've lost quite a few things in the process. So without further speeches, here is my list of things to keep a healthy attitude towards gaming and your body.
Step 1; Make sure before you start your 8 hour run of Elite and Dangerous you are in a healthy and comfortable sitting position, (Sit up straight with your arms level with your game controllers, legs must be at a relaxed point comfortable for you, not cross-legged or sitting on top of them)
Step 2; Make sure you have the supplies to keep you gaming for a little long if needs be, (Hydration; water, healthy energy water, even some tea. Snacks; fruit bites, fruit, pretzels salted (baked).) **Stay away from fizzy drinks and or anything sugar related even coffee has it's negative effects**
Step 3; Exercise, I know you don't want to go outside but every hour or so stand up and do some arm rotations jump in one spot walk away from the gaming monster for 5 min.
Step 4; Sometimes it's always a good idea to keep the window open and let fresh air into your gaming space and remember to breathe. Look away from your monitor or 52 inch screen, this will help your eyes relax if you focas on something else that is far away for a few sec.
Step 5; Toilet breaks, GO WHEN YOUR BODY WANTS YOU TO GO! Yes I do have the signs for you what to look out for, when you break out in that cold sweat you're either getting sick or need the toilet to drop off the unwanted baggage.
Finally Step 6; SLEEP, only game up to 1 AM and no later, try keep your sleep pattern stable. Your body needs that 8 hours of sleep to upload all you've done for the day to the back of your brain (ask your doctor he'll explain).
It's not the greatest list I've ever written but hopefully it'll give you an idea of what you should and should not do when gaming your favorite video game.
Have a awesome Christmas.