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Gyms in Pokémon GO are the source of Pokémon vs Pokémon battles. A gym can come in 3 states: Neutral, Enemy and Friendly (team owned). Up to 6 Pokemon can be placed on a Friendly Gym to be battled by other teams. You must be Level 5 to interact with Gyms. Gyms are also PokéStops, see more about this on the PokéStops page.
Types of Gyms
Neutral gyms can be captured for your team by adding a Pokémon to that gym. This Pokémon will be pulled from your collection and will be returned after it is knocked off the gym by an opposing team. If a gym has become neutral as a result of being defeated, the trainer(s) that participated in the battle have a 10 minute grace period to place a Pokemon before other trainers/teams can. Be fast though, if another team participated in the battle, they are included in that 10 minute grace period and could claim the gym before you!
Enemy gyms can be battled! While attacking you can use 6 Pokémon at a time to defeat the gym. Each Pokémon defeated will lower that Pokemons Motivation. When all Pokemon have been defeated, that gym will become Neutral and ready to claim.
When visiting a friendly gym, there are several actions you can take. If there are less than 6 Pokemon placed, you can place your Pokemon to help defend that gym. If a Pokemon has missing Motivation, you can restore a portion by feeding berries to those Pokemon. Spinning the Gym PokeStop also has a chance to give bonus items!
When a Pokemon is placed on a friendly Gym, it’ll have a Motivation meter represented by a heart.
Gym Level & Prestige Points
|Gym Level||Prestige Points|
You can push the prestige to 52,000, but it does not push the level of the gym past level 10.
Battling Prestige & XP (enemy gym)
|Prestige Removed||XP Earned|
|Each Pokemon defeated||1,000||100|
|Defeating all Pokemon bonus (winning)||1,000||50|
Training Prestige & XP (friendly gym)
If you default a Pokemon with higher CP than the Pokemon battling it, you earn more prestige and XP! Keep in mind, this is only the case at friendly gyms.
|Prestige Earned||XP Earned|
|Attacker CP > Defender CP||310 * (Defender CP / Attacker CP) – 55||31 * (Defender CP / Attacker CP) – 5|
|Attacker CP < Defender CP||500 * (Defender CP / Attacker CP)||50 * (Defender CP / Attacker CP)|
You will always gain at least 100 prestige as the minimum, and 1,000 as the maximum.