Participating in extreme sports can help your cardiovascular system work properly and better because extreme sports usually are very taxing in terms of being an aerobic sport which also puts a lot of burden on the aerobic system. Another benefit would be not so health-related but more personal; doing extreme sports and being close to death - which can hppen - makes one more appreciative and aware of life and death.
I've had this question before and the answer is D) 30 minutes per day, 5 days a week
Well by the way you put the question it seems like there are supposed to be answer choices but, since there are none. I'll still try to answer the question as best as possible
1. Comparing yourself to others is a bad way of trying to improve self esteem
2. Overthinking and overworking yourself is a bad way to improve self esteem
3. Trying to raise confidence in yourself takes time so you have to be patient
And that's all I can think of right now but I hope it helps!