Claim OVERDRIVE first if it is still listed on the official Roblox page, then use the codes page for reported rewards.
Gym Star Simulator Beginner Guide
Use this noob-to-pro route when you want a safe first session: claim codes, train efficiently, check your trainer and pet options, then plan the next rank.
First session
Noob to pro route
Keep early choices simple until current trainer stats, pet values, and rank requirements are confirmed.
Train muscle and stamina before chasing expensive trainer or pet choices.
Use spins and boosts during a planned session instead of spending them between short check-ins.
Compare trainer and pet notes before entering repeated competitions or pushing the next rank.