Gym Gains Update Plants Vs Brainrots Guide, Rewards & How to Complete!

The Gym Gains update brings a solid shake-up to Plants Vs Brainrots, especially for players who want a new grind instead of the usual farming loop. This limited-time event introduces a weight-based progression system, a brand-new gym area, fresh Brainrots, and milestone rewards that scale as you advance.

If your goal is to clear every milestone and secure the exclusive Gym Gains rewards, this guide explains how the event works, how to start it, and what you can earn before it ends. Also check out our Plants vs Brainrots Codes for more rewards!

Gym Gains Event Overview in Plants Vs Brainrots

Unlike previous events that focus on rarity or mutations, Gym Gains is all about Brainrot weight. You submit Brainrots that meet specific weight requirements to progress through milestones. Each submission pushes the challenge higher, encouraging steady grinding rather than pure luck. This event is time-limited, so understanding the mechanics early will save you a lot of wasted effort.

How to Start the Gym Gains Event

Before you can access Gym Gains, there are a few requirements you must meet.

Entry Requirements

• Reach Rebirth 1
• Pay 1,000,000 Cash
• Unlock Central Island

Once these conditions are met and the update is live, a new gym-themed zone called Planet Freshness will appear on Central Island.

Activating the Event

Inside Planet Freshness, look for a red submission button tied to the Gym Gains event. Interacting with this button unlocks the event system and allows you to start submitting Brainrots based on their weight.

Event Duration

• Starts: January 3, 2026
• Ends: January 10, 2026
• Total duration: 7 days

You only have one week to finish all milestones, so planning ahead is important.

Gym Gains Event Mechanics Explained

The Gym Gains event uses a scaling weight range system.

How Submissions Work

• Initial acceptable Brainrot weight range: 5.5 kg – 11.5 kg
• After every successful submission: Minimum and maximum weight requirements increase by 0.25 kg
• Each submission advances you by one milestone

This system lets you:

• Offload weaker or unused Brainrots early
• Gradually shift toward heavier Brainrots as the event progresses

Total Milestones

• 25 milestones in total
• Completing all milestones finishes the reward track

Resetting the Event

After completing all 25 milestones, you can reset the entire reward track for 10,000,000 Cash. This allows you to re-farm rewards, including duplicates of limited items, as long as the event is still active.

All Gym Gains Event Rewards

Rewards are tied directly to milestones. Early rewards mainly provide utility, while the final milestone offers exclusive items that will not return after the event. Milestone Rewards Breakdown:

• Milestone 1 – Cash
• Milestone 2 – Cash, 3x Premium Water Bucket
• Milestone 3 – Cash, 4x EXP Bottle
• Milestone 4 – 4x Frost Grenade, 1x Orcalero Orcala
• Milestone 5–24 – Rewards increase gradually (details revealed in-game)
• Milestone 25 – Gymbroini Sigmalini Brainrot, Pickup Pot, Buff Spinaccio Seed

The Gymbroini Sigmalini Brainrot is the standout reward and is completely exclusive to this event. Once Gym Gains ends, these items will no longer be obtainable.

Tips to Progress Faster in Gym Gains

• Submit low-value Brainrots early before weight requirements rise
• Prepare heavier Brainrots in advance for late milestones
• Avoid resetting the track unless you are farming duplicates
• Focus on consistent submissions rather than rushing weight jumps

Managing your inventory efficiently makes a big difference in how smoothly the grind goes.

The Gym Gains update adds a refreshing progression system to Plants Vs Brainrots, rewarding patience and smart resource management rather than pure RNG. With exclusive Brainrots, useful items, and a resettable milestone track, this event offers strong incentives for active players. If you want everything Gym Gains has to offer, start early, plan your submissions carefully, and make the most of the limited event window before it disappears.