41? Sweet Baby Seals. I'm 30 and think i'm too old for Box Handling.
If you're not in shape. You'll either get in shape or die trying to keep up with the pace.
Keep Icy Hot around and keep your joints good. You might want to look up some type of supplements to help you along. Learn to massage yourself, too. Recovery between shifts help keep my spirits high.
I take a lot of Protein, and i can definitely say over the course of a month I've put on muscle mass. Hydration is really important too. I sweat 5 minutes into my shift and all 2 hours throughout.
A lot of turnover in this job. It's not hard to see why either. It's physically and mentally exhausting. But after you've built walls of boxes you can say to yourself you've put in a good days work despite a desk job