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how to use the boost in gym star simulator

Use the Boost in Gym Star Simulator by opening the Shop, going to the Boost tab, and then selecting the boost or consumable you want to activate. In some versions of the game, the button changes from purchase to Use if you already own that item.

Quick steps

  1. Open the game menu or Shop.
  2. Tap the Boost tab.
  3. Choose the boost you have.
  4. Press Use or confirm the activation.
  5. Train normally while the boost is active.

What Boost usually does

Boosts are used to speed up progress, such as helping you gain strength faster or improve training rewards. Some guides also mention items like Protein Bars or Energy Drinks being used from the Boost area instead of a separate inventory.

If it does not work

  • Make sure the item is already owned, not just viewed in the shop.
  • Check that you are on the Boost tab, not the Codes tab.
  • Try rejoining the game if the button does not change to Use.

If you want, I can also give you a very short “where to click” version for mobile or PC.