Jacob Shamsian/INSIDER
A Dragonite about to destroy my Pinsir.
Gym battles are the least intuitive part of "Pokémon Go." It wasn't until my fourth battle that I learned I'm supposed to tap to attack, hold down on my Pokémon to activate a special move, or swipe to the side to dodge.
And until Tuesday, I had no idea how to switch Pokémon in the middle of a battle. Reddit user kial trelis taught me - and apparently much of the Silph Road subreddit - how. Just swipe up!
Here's a breakdown of how to do it battle: