How muscle XP and Levels work

Every muscle has its own Level, from 1 to 20. Training a muscle earns XP for it, and that XP sits in the muscle's own balance until you spend it.

Levelling up

When a muscle has enough XP, you spend that XP plus gems to raise its Level. Both are taken at the same moment. If you cannot afford the gems, nothing is spent.

Each Level costs more XP than the one before it. Gems go up in steps as you climb: 20 a level at first, then 35, then 60, then 85 for the last few.

What you can do with muscle XP

• Level the muscle up, which makes it earn more and defend better.
• Give it to a clanmate who has asked your clan for XP.

A muscle never loses a Level once you have earned it.

Learn more: What does levelling a muscle give me?