good habit

A behaviour that is beneficial to one’s physical or mental health, often linked to a high level of discipline and self-control
Examples good habits Regular exercise, consumption of alcohol in moderation, balanced diet, monogamy, etc.
Examples bad habits Smoking, drug abuse, gambling, sexual promiscuity, poor sleep hygiene, high fat-, high red meat diet

good habit

Healthy habit Clinical medicine A behavior that is beneficial to one's physical or mental health, often linked to a high level of discipline and self-control Examples Regular exercise, consumption of alcohol in moderation–if at all, a properly balanced diet, monogamy, etc. Cf Bad habit.