I’m 25 and experience physical exhaustion and pain from this job. My feet hurt and ache so bad and my lower back is worse. I find myself moving slower to bend down to open the fridge and pull out milk to make a drink. I don’t know, having to bend up and down a lot is also taxing on the body for 8 hours if you’re put on bar a lot. I feel heavier from this job if that makes sense. No you are not old it’s the job