Is it hardcore to work 50 hours and do college part time also?

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Hardcore? More like impossible. To work 50 hours p.w is - beyond - full-time. That's 4 12 hour shifts a week, and most college's are closed at the week-end's, so...how could that even be possible?

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I work nights and my college classes are 5-9 in the week days, my night shift is 11-8

Is it hardcore to work 50 hours and do college part time also?