I think it's funny how people assume..

[Seven]

That when you enter Shikai your body gets an upgrade. xD Soul reapers are always at maximum speed, strength, and durability unless the Blade powers say other wise.

[Vivi]

That when you enter Shikai your body gets an upgrade. xD Soul reapers are always at maximum speed, strength, and durability unless the Blade powers say other wise.
With Body do you also include Reiatsu?

[Bacon]

Yea I was wondering about that, so your reiatsu stays a constant I guess. Honestly I don't know where this came from. xD

[Vatanui AKA Pride]

It came from Ichigo, which was because of his blade's powers.

[Bacon]

Oh I see, gues I never thought about that or the anime sucked in spelling that out.

[Vatanui AKA Pride]

The anime sucks in explanations, but the manga doesn't.

It explained that there are four types of zanpuktous. Physicals, Kidou, Elemental, and Support.

[Vatanui AKA Pride]

With Body do you also include Reiatsu?

I believe you shouldn't. Reiatsu is spiritual energy, after all.

[Bacon]

Oh I see, maybe I outa read it one day.

^ Wouldn't releasing your zanpaktou release more of the body's inherent energy?

[Yori]

Oh I see, maybe I outa read it one day.

^ Wouldn't releasing your zanpaktou release more of the body's inherent energy?

Your bankai yes, example: Ichigo