Well then you haven't lived. Had numerous routes where I handled 50 lb and up boxes daily including well over 100 lbs. Some examples. Picked up palletized truck leaf springs from a warehouse on the Mexican border. Used to pick up soil samples at a DuPont lab. Ten to twelve boxes weighing 100-110 lbs each. Added bonus of being shipped to Canada so had to deal with international paperwork. Hated that stop. Once to twice a week. Picked up printing press rollers from a factory in Kansas daily. Most days 3-5 crates weighing 120-150 lbs each. Almost always there was at least one that probably was pushing 200 lbs, over the limit. My boss said they were such good customers to just turn a blind eye. Used to pick up dozens of heavy cases after conventions. Company in Seattle once sent out 700 boxes of luggage to Saudi Arabia. I came in on my day off to handle that. After Ground came about it definitely got easier on us.