All of the above are true
Quaternary Prevention refers to protecting someone from over-treatment.
1. The workouts can be increased by a bit each time
2. the principal or specificity states that if one area is trained, that specific area improves. Flexibility is a good example of specifically going for being more flexible
I think its to increase his calories and do less exercise until he reaches where he wants to be.
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.
