@ Buffalobian
Obviously the writers never researched that part about less energy due to less movement cause Goku is depleted after 30 seconds of almost no movement and in worse shape than he was. Also, why is Goku on the verge of death every time he goes UI? The whole aspect of UI is total BS and I don't think the writers even know what the hell they are talking about. UI is not even close to this Mushin.
@Darth
Why you always butthurt over comments?
The intent to kill is more valid than you wish to not believe. Without the intent to kill, you will never survive. Remind me again how many years did Bruce Lee go undefeated? Some can argue it's because he was the first Mixed Martial Artist. THAT a lone does not make him as fast as he was or as strong as he was. Bruce Lee was as far from Mushin as any true Martial Artist.
This UI is just a bogus Deus Ex Machina construct so they can make characters like Videl and Yamcha valid again by making it so everyone can obtain something without putting in any actual training or effort. Which is LAZY writing from the DBS team.