Are there any health side effects if I work 12 hour shifts from 4 a.m to 4p.m and waking up at 9am?

My job alone takes a toll on me which consists me of loading 3 tractor trailers full of tires by hand which would amount to 150,000 pounds a night or:

My job alone takes a toll on me which consists me of loading 3 tractor trailers full of tires by hand which would amount to 150,000 pounds a night

or:My job alone takes a toll on me which consists me of loading 3 tractor trailers full of tires by hand which would amount to 150,000 pounds a night

or:Well, if you keep missing your shift by 5 hours then it won't be an issue for long...

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