I hugely respect you for making this decision. For my AS Level I achieved the grades ABBB (Max is AAAA), I was hugely pissed off. It was due to these damn computer games wasting my revision time and I was addicted. Since I got these results, I have changed my trait of thought. I thought I could get away with it due to my previous GCSE results being too high. But truly I felt like I was screwed in the anus but that is on the basis it is how Jogzi described it to me  . I got a B in maths and that is my top subject, due to these computer games I did not revise for maths at all and ended up getting an E grade in mechanics, averaging the total grade to a B because I got two very super high A's in the other chapters. I was predicted 4 A's in Economics, Philosophy, Physics and Maths/Mechanics, luckily my predicted grades are A*AA (Dropped Philosophy, waste of time tbh, still interesting), so I can apply for Maths or Engineering at Cambridge University. But truly I was disgraced, I felt my ambition was over. I felt totally screwed.  I was wrong. Don't give up.

Due to these computer games I lack physical exercise. I'm not fat and I'm one of the fastest runners in my year, but I weigh 15 stone (I'm 6ft2). So I'm like one stone over what I should be but I also have a lot of muscle mass.

At the end of the day, I am glad you are not giving up.
This is a good choice. Congratulations to you and I hope you are successful in the future.
However, for me I will pull away due to self control. Before I did not wish to recognize the effects it had on me, I chose to be ignorant, but it caused me to get lower than what I should have achieved therefore showing me that my ignorance and over confidence is not the correct option.
Lessons are learned, now I see the impact this machine has on me as a person and can pull away from it any moment I wish.

Unfortunately they are more favorable to their friends and attend their needs.
They will ban based of logs even if they prove insufficient. They will go through every possible aspect to justify a week ban. It's was a pain, however they are not very experienced so are still learning the ways, so I do not find it annoying.