The word for today is…
regimen (noun):
1a: a systematic plan (as of diet, therapy, or medication) especially when designed to improve and maintain the health of a patient
b: a regular course of action and especially of strenuous training
2: government, rule
Source : Merriam -Webster
Etymology : Regimen, which usually refers to a system of rules or guidelines—often for living a healthy life or taking a regular dose of exercise—comes ultimately from a Latin verb, regere, meaning “to direct.” Regere led to the English word regimen, first by way of the Latin noun regimen, meaning “steering” or “control,” and then via the Medieval Latin regimen, referring to a set of rules. Other regere descendants fell further from the tree, including correct, erect, region, rule, and surge. Be sure not to confuse regimen with another of its kin, regiment, which refers to a military unit.
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