How to win Gym Battles in Pokemon Go?

Gym Battles:

The craze for pokemon go has reached its peak with more than 100 millions of downloads with few days.So as per the hype created from very beginning, the game should have some good features in it right?

Yes, ofcourse the game came with Gym Battles in it.

Before that we will need to see 3 teams that are avaliable in the game.

1. Team Mystic
2. Team Instinct
3. Team Valor

So the Gym is initially silver in colour before any team occupies it.Check the below image 

Once the Gym is taken over by any team,the GYM will change its colour to that particular team.

So in-order to fight for your team to take the gym into your teams control you will need to fight with opponent team pokemon assigned in it.

The pokemon will be assigned to the gym.Consider an example as below:

Ex:suppose Team Valor has occupied a gym and if another Valor team mate fights that gym and wins,he can assign is pokemon too in that gym. It means same team players can conquer the gym many time and increase the GYM's reputation.

The GYM level depends on how many pokemons assigned and also the reputation.