Most universities recommend a maximum of 15 - 16 hours per week of work while pursuing full - time studies, preferably only during the first and second year of an undergraduate degree. (sciencemag.org)
The manufacturer recommends a maximum weight of 20 pounds, although slightly larger dogs may still enjoy sleeping in it. (thedogclinic.com)
Your professional body may recommend a maximum number of hours of client contact per week. (prospects.ac.uk)