In my opinion, a person should not exercise Just because he wants to break the exercise count barrier Rather, he should have fun and benefit from every exercise
Do as many as tu takes for you to feel the burn, but stop after feeling it be unbearable as you dont want to over work your Body. It depends on you and the internauty of your exercises, but try to have two rest days a week to see results. Hope that helped😊
There are various kinds from basic stretches to extreme burn out workouts with weights. Just depends on what you want and what your body needs.
As many as you'd like- variety can be good for the body, developing different muscles, and keeping things fun & exciting, for you to continue to exercise.