<human>: I just applied for a job as a labourer for a meat cold store. One of the questions asked me if I can repeatedly lift 20kg of weight all day. I said yes, but truthfully I have no clue.

I'm actually a really short guy (however I do have a bit of muscle, I'm short, not skinny/weedy) and have no clue whether I can actually do it or not. I know I could easily do 12kg all day with one arm, since I tested it on an object I have that I happen to know is 12kg, so 20+ with two arms should be fine (considering they'd probably use trollies to actually transport the goods around and I'd only be moving them short distances).

But yeah,

Summarize the given text in a few sentences.
<bot>: Have no idea how heavy 20kg actually is, would it be reasonable to expect a somehow fit 5'5'' guy to be able to repeatedly lift that weight for a few hours a day?