

Im going to say the Harvard estimate is probably pretty close. It is probably a bit higher than what you would need on a day to day basis for survival, but enough to help your body maintain some muscle over the long term.
Its not enough for someone wanting to be fit or muscular though.
The lack of specificty is also a strategy used to bolster support for deregulation.
Simply say “we are eliminating regulations” , and dont ever talk about what you are deregulating, because actually many regulations are a net good for society and were implemented for a reason. Preventing companies from dumping poison is a regulation.