User blog comment:Soulreaper1234/What's up with Ichigo and his BANKAI, is it in constant release?/@comment-44061-20100915050543

Why do people make this baseless assumption when they apparently have no understanding of the time dynamics. Besides the compression ability that Godisme has mentioned. Ichigo has only been in bankai for 1 day for indeterminate amount of time. Also while going through training in the Dangai he was expending no energy in his compressed state of bankai as he was in a meditative trance for 3 months in there which is the equivalent of 3 hours in real time.

So all we know is that he has been in bankai for 1 day and for at most 3 hours (3 months in the dangai which doesn't count towards actual time) as the fights he has been in up until then have been a most a matter of minutes.

Contrary to what people think these battles aren't taking place over hours or days.