No such thing. The Rezound uses an Li-ION battery which does not require anything special like the old NiCad batteries did. There is no battery memory, flat spots etc...Just use it and you're good.
The whole use till it dies and recharge thing is more for the OS I think, and with iOS not being Android... nuff said.
I've calibrated my battery multiple times on the DX and my Rezound and have NEVER noticed a difference that was a direct benefit from calibrating.
Even Google came out with an article a few weeks ago about the myths of battery calibration.
If you really want to though.......
Use the phone till it dies, place on charger; DO NOT POWER ON!
Once phone is completely recharged (green light comes on) leave on charger for another 45-60 mins (something I've always done, this does NOT overcharge, just saturates the cells completely) Then take off charger and turn one.
Rinse and repeat one more time without using the charger throughout the day, let it die completely with no in-between charges.
Or if you are rooted, do the above method once and instead boot to recovery and wipe battery stats (probably not worth it since battery has no memory) or use the battery calibration app from the Market.
How to Prolong Lithium-based Batteries - Battery University
Just a little info to help formulate opinions