Is it bad for me to quit a job after 2 days?

I got hired for a summer job with the DOT for my state and it lasts 10 weeks ( Mid August) basically it's road construction work. We're still in "training" but we have been working on actual projects and I hate it. Its 10.5 hour shifts working in the hot sun, there's barely any breaks. It's just so physically exhausting. I should have known what to expect, I know, but it really hit me that I don't like what I'm doing and I'd have to be doing it the whole summer.

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