Какими свойствами необходимо владеть людям которые занимаются экстремальньными видами спорта? what

People who are engaged in extreme sports are very brave. These people should have a strong character. Such people should have good skills. People have to train hard to not die. They must be able to withstand heavy loads. People should get used to adrenaline. People should learn the kinds of sports they are engaged in. Such people should work under the guidance of an instructor. They must withstand emotional stress. They must firmly decide to engage in extreme sports. People should be sure of their choice. They should use insurance.