Fully charge your battery, then use your phone until it has fully discharged, or shuts itself down needing a charge.
Do that 2 or 3 more times and your battery has been conditioned for maximum usage..
They're are those that still argue that as not being needed, all I offer is I get between 15 to 20 hours of battery usage consistently with moderate to heavy usage.
But do what ya gotta do and enjoy
EDIT: I'm currently at 17.5 hours on battery with 32% remaining.
Posted via Android Central App on my Galaxy S4