Just a few minutes ago it was pubished by Infinity Edge, another good video “How to feed Pokémon berries while they are in a gym and keep them in the gym longer”.
As pubished in the youtube page by Infinity Edge: “This tutorial will show you how to feed your Pokémon berries while they are in a gym. You don’t have to be at the gym! By feeding them the berries they will stay in the gym longer. Remember, you can only get 50 PokeCoins per day.”
You can check the video below: