Ok so i'm 18 and work in a smaller grocery store, i only have 4 hours shifts from 16:15-2015, basically how it works is i do tasks that one of the full time employees or my boss gives me when i come to work, along with all the stuff i'm supposed to do every shift, while a 16-17 year old works the checkout. Anyways all this to say basically none of these tasks are particularly challenging or physically demanding apart from maybe once in a blue moon having to lift a pallet. They are just boring. Yet i feel completely physically and mentally drained when i get home. Is this how working is supposed to feel? When i get home from school sure i might be a bit tired but honestly im fine to do my homework go walk my dog and whatever. Even on weekends where im working like a 5 hour shift and i didn't even go to school im completely drained.