habits for death

Habits I keep despite the fact I know that they are killing me:

Fast food - 2 0r 3 (sometimes more) times a week

Lack of exercise - I am busy with school and work but there is no excuse for all the time online, say Facebook, I could be using to exercise

Sleeping in - Sometimes it is necessary sleep that just happens to coincide with a weird work schedule but other times I don't sleep enough and leads to too much sleep other times.

Not keeping my room organized/clean enough

Unnecessary arguments with my brother for the fun of it