I've been working everyday since January (..)
Last day off was the Avril Lavigne Concert, which was on May 31st, been working everyday since then and its the 25th today, last friday i worked from 9am to 11:30pm (minus travelling from Job 1 to Job 2 in between). People do it all the time, if its got to be done, it's got to be done.
We all did marathons at some point in our careers, some of, working for themselves - still do. The point is - in regular employment - it's illegal. Workers cannot be forced to work for more than 48 hours (including overtime) in each seven day period and you must have uninterrupted time off of at least 24 hours in each working week or two consecutive days off in every 14-day period. And then you have the additional dance routines - employees that work night shifts must work no longer than 8 hour shifts in any 24 hour period, all workers must have minimum of 11 hours rest between each work day and so on, so forth.