Olympia is great i love it. I see it since i was 6 or so. At first i view it with my grandfather and we notice the wide because in this past time there was no internet or other helping to see which person is qualified. In sommer olympics i love basktbal most, then dressur because of the wonderful german commentator and and third i would say it is Handball.
Volleyball, basketball, tennis. Vigorous sports that not only keep the body in good shape, but also help develop reaction, intuition and coordination, develop analytical thinking. All this is the prevention of brain aging.