Thats what I'm saying lol. I've moved some heavy stuff. I picked up a washing machine and bear hugged it up stairs and that was like carrying a pillow compared to the treadmill with a second person. A heavy treadmill is one thing I never want to move again
I just bought one which weighs over 100 kg. It should be carried upstairs but still figuring out whether I should remove the heavy parts such as motor, belt, board inside the belt and rollers or get more man power (no room for extra hands, tho).