<human>: Can you give me a shortened version of the text?

Long story short:

I have been sent to BFE for a 3 month assignment which involves ONE task; I have a 120,000 row, 30 column excel spreadsheet, I use scanned images of hard copies to verify all the data in the spreadsheet matches the hard copies.

All I do is highlight cells when there are discrepancies, they will be fixed later when that work is authorized.

I am working Mon-Thurs, 10 hours a day on this, staring at this one spreadsheet, and that is the only thing I am there to do.

I'm on my second week and now that I'm in the groove of it, it is brainless and my mind falls asleep on me while I drool on myself. 

Normally I have much more involved responsibilities at work, but this is just how the cards fell.

Any tips at all on how to keep myself alert, awake, and my brain from rotting while I'm doing this?  I already listen to music and drink coffee in the AM and a Mtn. Dew in the afternoon, but it's not really helping anymore.

Let me know what works for you redditors in similar situations!
<bot>: Have one task verifying data in excel for 3 months, glad to have a job, not complaining about it, just need some tips on staying alert.