Yet more pumpkins

A trailer holds 5 tonnes of pumpkins. In the crew there are 5 people picking from the ground and putting the pumpkins on a conveyor belt. On the trailer are 2 people packing what 5 people pick. So, each person on the ground picks on average 1 tonne per trailer. And the people packing handle 2.5 tonnes per trailer each. I today did 4 turns packing and 3 picking. On average, 13 tonnes of pumpkins passed through my hands today. Is it any wonder that I hurt? Having said that, I was dying and could not have picked up another pumpkin yesterday and we didn't quite manage 5 trailers. Today we did 7 so I must be improving! I'm hungry but too tired to cook. Hmmm.