This is a daily routine as explained in Ayurveda for maintaining personal hygiene. These include the evacuation of natural urges like passing stool, urine and afterwards brushing your teeth, taking a shower, applying Anjana (collarym), taking medicated smoke, having food at proper time, working honestly, not sleeping during the day time, etc.
The seasonal regimen is an important routine to maintain for optimum health. Ayurveda explains and advises on the type of diet and conduct that you need to follow during each season.
The Ethical regimen is a practise that relates to social and ethical conducts that you should practise on a daily basis. These include following non violence, not indulging in criminal activities, speaking the truth, not hurting others in words or actions, etc.