As much as I love my job, being an aviation nut, I've found that flying almost every day absolutely exhausts me, and I have easily 'suffered' more illness than with other jobs I've had (may or may not be related to the rather notorious aircraft type I fly on
). There's also physical injuries which are kind of unavoidable in such a confined environment - the amount of people I've seen with injured feet, legs, etc from trolley accidents (inexperience, U/S equipment), people hitting their heads, muscle strains, etc.
The main thing that gets me is descent. 99% of the time I am absolutely fine, but on the odd day, even if I feel perfectly normal, I will get terrible ear pains and all the other discomforts associated with the pressure changes. Other people seem to adapt pretty well to all that, and most of the time I'm fine, but there's been a few instances where it's taken several days to get over it.