They have me unloading trailers, and yesterday I finished the trailer in like 1 hour and 45 minutes, and my supervisors said I did a good job on it. Today there was a trailer that had more Bulk on it than the one yesterday, and I spent over 2 hours trying to finish this one. My supervisor told me today that I need to work faster. Can I get fired for not working fast enough? and how could I work better and faster at it?. Should I push myself to do better than my best? Or workout during the day? or get better sleep?. Or what would you recommend?.