connection, centering, breathing - those are the things that make aikido techniques work. don't know about you, but i really don't want to stop breathing; that would put a cramp into my almost none existence social life.
without connection, how's you plan to throw some body? sort of trying to phone someone without connection. without centering, wouldn't you be off-balance while trying to take someone else balance?
Saotome sensei mentioned often that aikido isn't about techniques, but is about principles and ideas. who am i to argue with one of O Sensei's uchi-deshi? Besides, there aren't that many aikido techniques; you could learn them in less than a year. what you plan to do after that?
if you just want to sweat, wouldn't an aerobic kick boxing class be better, since you will be sweating and enjoying the leotard view at the same time.
that remind me i need to find a manly leotard. is there such thing? and wonder if the women will hate me because i am beautiful.