Many states do not require this amount of time to be spent with each resident, but there are also many nursing homes that are well below even their state's required amounts. (personalinjuryattorneysmiamifl.com)
And all relationships require some amount of time and attention. (sciencemag.org)
You may notice changes sooner but on average, women require this amount of time to see positive effects. (nicolejardim.com)