After I close the MBP, should I wait for the light to dim before I move it?

Hi,

After I close the MBP's lid, should I wait for the light indicator to dim before I move it? I'm asking because sometimes i have to wait about 2 minutes for it to dim and it's very frustrating when I'm in a hurry.

I switched from windows and normally when you close the lid of a laptop, it goes to "sleep", meaning that it stops the hard disk and keeps the data in the RAM fresh with power from battery, so going into sleep is very fast on my older windows machines. Why does the mid-2012 MBP with updated 7200 rpm take this much to go to, as I suspect, similar state? Maybe it's dumping all the RAM info on the hard disk, but I don't think it does it always because when I open it up, it loads fast.

(I think if it detects low batter, it automatically goes into hibernation)

Thanks.