Présenter un sport, c'est à dire, ne pas donner le nom du sport, essayer de faire durer le suspense, donner des infos en partant des plus vagues à celles plus d

je vais essayer : this sport is a very exited one , you can spend your day in water, doing deferent mouvements , thanks to.this activity you can beat deffernt illnesses.......

This sport needs quite self control;  you need to know how to swim,; you have to learn to breathe differently,slowly ;  you can do it on day time and at night also; it can be very impressive, but you mustn't be scared : it might be dangerous for you;
it's better if you are with some one having a camera otherwise you won't see any colors; you have much weigh on you but in this environment you feel light; you need to be careful before stopping : there are rules to respect; if you don't , you might go to an hospital; you're not allowed to fly (travel by plane) after that.
You learn a sign language, because you can't talk in this environment and usually people never practice alone unless they're very experimented, just a few do it.

Now guess which sport is it ??? Do you give in ? (donnes tu ta langue au chat ?)
It's scuba diving   (plongée sous marine)

j'ai pas forcément mis les phrases correctement pour faire monter le suspense
j'ai pas pris le temps de le préparer. J'espère que ça t'ira

Bonne fin de soirée