Should I take Kendo or Fencing?

Depends I guess. In my opinion though, I'd say Kendo gives more full body work out than fencing. With fencing, you focus more on speed, coordination and accuracy, so power is not the focus since you rely on the point of your sword combined with footwork and wrist action to create the neccesary momentum to hit your opponent, while Kendo requires hip action and full body swings to perform a strike. With repetition, you can work up a sweat in no time. Besides, in terms of practical self defense, Kendo techniques translates better when using a baseball bat or a golf club and much preferred compared to fencing with an umbrella or a walking cane since fencing targets are pretty much limited to vital spots like eyes, throat, gut and groin, while a baseball bat or golf club will hurt no matter which part of the anatomy you hit. Like I said, depends on what you want, power or speed?