HOW OFTEN TO EXERCISE FOR GOOD HEALTH?
In exercise science, the term frequency is used for the same.
1) Cardiovascular exercise like walking, running, swimming etc can be done every day for 20-30 minutes.
2) Strength building at least once in two days it would be needed to increase strength.
3) Flexibility exercises like Yoga and stretching too can be done every day for 20-30 minutes every day or over a weekend preferably in a class.
4) The overarching principle of frequency is for there to be consistency. A little every day is better than becoming a "weekend warrior” by doing a lot on weekends and practically very little on weekdays.
Stay active on all days using every opportunity you get.