I've been getting trained for unloading packages since Thursday. During the tour and and training, I have been told I am on 30 day probation for them to decide if they will keep me. So far, my supervisors like the effort I have been putting in and the willingness to learn. Of course they have pointed out I still have a few things to work out, as I go through my probation. My supervisor also pointed out on my first day, that if did not like what I was doing, he wouldn't keep me (He didn't put this rudely). I've competed in Track & Field for 3 years, so working hard for me is pretty good. I was looking for tips and things I should keep in mind while I work through probation. I'm going to wait till I get paid to buy workboots. Do most of you stretch out before you start working? I'm still learning some of the slang/acronyms like "irregs" and how to properly spot them. What ways to help keep your endurance going having to repeatedly get low for packages on the ground?