“Scientific studies have led the American National Institute of Occupational Safety and Health (NIOSH) to conclude that 23 kg is the maximum weight which may be lifted manually under optimal conditions if health risks are to be avoided”
“According to the Health and Safety Executive (HSE), a man shouldn’t lift anything heavier than 25kg, while the safe lifting weight for a woman is no heavier than 16kg. But the HSE has explained that these are broad guidelines, rather than safe limits for lifting. It added that lifting weights under these amounts results in a low risk of injury.
These amounts are also the highest recommended weights for men and women. There are different recommended limits depending on how high you are lifting the load.”
That may be doable by a wide range of consumers, but I think it certainly would rule out a significant portion of them. 50 pounds is about 23kg, and https://www.europarl.europa.eu/doceo/document/E-6-2008-7096_...:
“Scientific studies have led the American National Institute of Occupational Safety and Health (NIOSH) to conclude that 23 kg is the maximum weight which may be lifted manually under optimal conditions if health risks are to be avoided”
https://www.first4lawyers.com/personal-injury/resources-and-...:
“According to the Health and Safety Executive (HSE), a man shouldn’t lift anything heavier than 25kg, while the safe lifting weight for a woman is no heavier than 16kg. But the HSE has explained that these are broad guidelines, rather than safe limits for lifting. It added that lifting weights under these amounts results in a low risk of injury.
These amounts are also the highest recommended weights for men and women. There are different recommended limits depending on how high you are lifting the load.”