Let me start by attempting to clarify the title "I can't get ill".
Of course I can and no doubt at some point will get ill. In fact as I'm writing this I don't feel 100%. But let me explain:
At the moment - although not working full time hours - I am working across all 7 days of the week. Whether it as a swimming teacher - 6 days a week - or as a home tutor in maths and english - 2 days a week - I will be working at some point of the day - albeit some days only for 2-3 hours - everyday for seven weeks straight (followed by a week of only working 5 days - a whole weekend off!!! - and then a further 7 weeks of working 7 days a week again).
Until a couple of weeks ago I used to have a Thursday off, when I would have a bed day. I would literally stay in bed all day catching up on emails, writing blog posts, watching youtube videos etc, only getting out of bed to use the bathroom or get something to eat. The furthest I ever went on a Thursday was the corner shop - 20meters away - and that was only when I was out of something crucial like biscuits.
However, I recently gave that up to take on more swimming teacher hours and I need to do it because I need the money but two weeks in and I'm definitely already missing my bed day. The thing is I still have plenty of time each day for emails, writing, doing my washing etc and so I thought it would be fine, that it wouldn't make much of a difference. And physically it probably isn't - although being a swimming teacher is surprisingly tiring - but psychologically I think it makes a big difference. Although I know that I'm only working around an extra 5 hours across the week; I also know that I will not get a full day off until the end of May and I won't get some proper time off - around 3 weeks which is going to be amazing - again until the end of July (which feels like a million miles away).
So baring that in mind, there can be no possibility of me getting ill. I can't get ill. It can't happen because I simply don't have a day off to rest and help myself get over it. I could of course take a day or two off work to try and get better but I get paid for the hours that I work and so this could be very costly for me. It's also not always very easy to get cover and there is no way that I would want to let down my boss - who has been very good to me - or the children and (occasional) adult that I teach. Therefore I just can't get ill because if I do, there isn't much of an option except to simply plough through, rest when I can and hope for the best.
So maybe what I should have said is: I can't afford to get ill. That's probably more accurate. So keep your fingers crossed for me that I can stay nice and healthy because although I will be trying my best to get enough sleep, eat healthily, take vitamins and get plenty of exercise in order to stay fit and well. The next couple of months are going to be tiring - as well as work I have to find time for writing, swimming, climbing, Krav Maga etc - and I also work with around 100 children and as lovely as they all are, lets be honest; they're all little snot machines and could pass on their germs to me at any given moment.