YOU HAVE TO GET ALOT OF rare candy.
you train them
Train them............
It is a illness your Pokemon can rarely get. It starts by Catching a wild Pokemon with it. It helps your Pokemon level up faster. It also slightly lowers the stat gain.
if you want to level up your pokemon faster. give the pokemon you want to level up an exp share but it at the bottom of your pokemon list and battle and beat the elite4 in succession over and over until it is at the level you want it to be.
lucky egg
take a weak pokemon to the elite four
Its the same either way.
Try using Rare Candies for easy levelling. :)
To level up pokemon quicker you must defeat higher leveled pokemon for one also if the pokemon your training was traded to you it will receive boosted experience points which help level up your pokemon even faster. If your pokemon holds a lucky egg item they will receive this kind of boost as well and if you give this to a pokemon that was traded to you it will receive even more boosted experience points.
Well...There really is no way to level up "faster", but adding friends helps you, and doing the quests! Hope it helped! :)
Giving a Pokemon an experience share at a low level while other, stronger Pokemon fight will level up to a strong enough to level to fight well and train. You can also level them up faster by using Rare candies either by using cheat codes and/or action replays or saving up Rare candies found throughout the game. The best way to level up your Pokemon is to fight constantly although it is not the fastest way.
A shiny Pokemon is no different than a regular Pokemon in stats or growing levels.