say this.....the atomic mass of the sun is equivalent to the circumference of the milky way or the m&ms theoretically misplacing the actual prophecy of noah being the savior of the unknown worlds pi compared to Albert enstien's tremendous nerve-racking experiments with the intellectual mishaps of the interesting theory that female species hate male feminine acting as a special antidote to the trident blow and thus you are sick.
Water polo sounds really fun! Better than having to flip burgers. Besides, when you volunteer to commit to something you should WANT to do it. If you dread it more than you enjoy it then get out. If you really enjoy it, just bite the bullet & go! Half the battle with stuff like this is simply "getting going". Good luck!