I happen to be among the minority who, following a robotic prostatctomy and salvage radiotherapy in 2009 got lumbered with permanent bladder incontinence.
So now, when it comes to heavy lifting, I'm obliged to resort to all kinds of tricks to avoid it, such as 'walking' furniture, rolling large boxed items, ordering 10 kg bags of dishwasher salt instead of 25kg bags, etc etc.
The outcome is I very rarely need to lift anything nowadays, so it's not really a problem.