Nimnim
The Nim
When I first started I was in the unload, and I thought I was in good shape. Of course it turns out I wasn't in "good" shape for UPS, so after a couple days even though I was trying to lift everything properly I had some soreness in my back, mostly lower. Over the next couple weeks though without changing things the soreness vanished and things were good. UPS is a special physical level and you use muscles you don't normally use so they need a little conditioning. Stretching helps, but the activity we put up with does hit places we thought we were good in. Just keep following the proper methods and don't push too hard, if it hurts ask for help. As much as management might complain they would rather you get help than hurt.