We do sometimes do some heavy lifting in this hobby.
https://www.telegraph.co.uk/news/2018/11/17/straight-back-bent-knees-advice-wrong-study-finds/
A new study argues that while most people instinctively believe lifting with a straight back is common sense, “round-back lifting” is more efficient and no more hazardous.
Published in the Scandinavian Journal of Pain, it points to research conducted on forestry workers which found that those who stooped to pick up their loads expended less energy than those who squatted.
The paper also argues there is “no significant difference” in spinal loads and compression forces between the two postures.
Despite the lack of evidence supporting a straight-back lifting technique, it is commonly believed to be the safest method and is taught to nearly every employee in the country upon joining a new company.