The Gym Gains update added much-needed change to Plants Vs Brainrots, especially for players who are looking for something fresh to grind. This limited-time event focuses on progression through weight-based challenges. With new Brainrots, a dedicated Gym, and milestone rewards, the Gym Gains have a lot to unpack. So, if you want all the rewards and the exclusive items, here's a complete Plants Vs Brainrots Gym Gains event guide to help you out.
How to Start Gym Gains Event in Plants Vs Brainrots
To access the Gym Gains event, you must first unlock Central Island, which requires reaching Rebirth 1 and paying 1,000,000 Cash. Once you arrive on Central Island after the update goes live, a new Gym-themed area called Planet Freshness becomes available.
Inside this area, you will find a red submission button tied to the Gym Gains event. Interacting with it adds the core mechanic of the event, which is submitting Brainrots based on their weight rather than rarity or mutation alone.
The event is available to all eligible players from January 3, 2026, and runs for one full week until January 10, 2026, giving you a limited time to complete all milestones.
Gym Gains Event Guide in Plants Vs Brainrots
The Gym Gains event is built around submitting Brainrots that fall within a specific weight range. The starting requirement is relatively low, but it scales steadily as you progress. Initially, the acceptable Brainrot weight range is between 5.5 kg and 11.5 kg.
Each successful submission increases both the minimum and maximum required weight by 0.25 kg, meaning it will increasingly ask for heavier Brainrots. You can use this to dump low-value Brainrots while also getting better ones in exchange.
There are 25 total milestones in the Gym Gains event. Each submission moves you forward by one milestone, unlocking rewards along the way. Once all milestones are completed, the entire reward track can be reset for 10,000,000 Cash, letting you to farm duplicates of event-exclusive items if you choose.
All Gym Gains Event Rewards
The Gym Gains event features milestone-based rewards that scale in value as you progress. Early rewards are mainly Cash and items, while the final milestone grants exclusive, limited-time items.
| Milestone | Reward |
|---|---|
| 1 | Money |
| 2 | Money, 3x Premium Water Bucket |
| 3 | Money, 4x EXP Bottle |
| 4 | 4x Frost Grenade, 1x Orcalero Orcala |
| 5-24 | TBA |
| 25 | Gymbroini Sigmalini Brainrot, Pickup Pot, Buff Spinaccio Seed |
The Gymbroini Sigmalini Brainrot is the highlight of this event, alongside the Pickup Pot item and the Buff Spinaccio Seed, all of which are exclusive to Gym Gains and unavailable elsewhere once the event ends.
Frequently Asked Questions (FAQs)
The Gym Gains update goes live on January 3, 2026, at 3:00 AM PT and is available immediately once Central Island is unlocked.
The event runs for one week, ending on January 10, 2026.
Progress is based on submitting Brainrots that meet specific weight requirements, which increase slightly after every milestone.
Yes. After completing all 25 milestones, you can reset the event for 10,000,000 Cash and earn the rewards again, including duplicates of exclusive items.
For more on Plants Vs Brainrots, check out Complete Plants Vs Brainrots Biomes Guide or How to Fuse in Plants Vs Brainrots – All Fusion Recipes on Pro Game Guides!
Sudhanyo Chatterjee has nearly six years of writing experience, with four focused on the gaming industry. He specializes in RPGs, strategy games, and mobile game guides. His favorite titles include the Diablo series and strategy staples like Total War and Age of Empires.