How to Get Muscle Fast
The fastest ways to gain muscle — dumbbell upgrades, pet multipliers, rebirth stacking, and boost strategies.
How Muscle Gain Works
Every step you take in the game generates muscle. Your total muscle per step is calculated as:
All multipliers stack multiplicatively. This means upgrading from a 5x dumbbell to a 12x dumbbell while holding a 2x pet at Rebirth Level 1 changes your output from 1 x 5 x 2 x 1.5 = 15 to 1 x 12 x 2 x 1.5 = 36 muscle per step. That is a 2.4x jump from one upgrade.
1 Dumbbell Upgrade Path
Dumbbells are the most impactful upgrade early on. Each tier dramatically increases your muscle per step. Always upgrade to the next tier as soon as you have enough Wins. Below is the full upgrade path with costs and power levels.
| Dumbbell | Muscle/Step | Cost (Wins) | Cost Efficiency |
|---|---|---|---|
| Basic Dumbbell Tier 1 | 1x | Free | Starter |
| Iron Dumbbell Tier 2 | 2x | 100 | 2.0x jump |
| Steel Dumbbell Tier 3 | 5x | 1.0K | 2.5x jump |
| Golden Dumbbell Tier 4 | 12x | 10.0K | 2.4x jump |
| Diamond Dumbbell Tier 5 | 30x | 100.0K | 2.5x jump |
| Crystal Dumbbell Tier 6 | 75x | 1.0M | 2.5x jump |
| Candy Dumbbell Tier 7 | 200x | 10.0M | 2.7x jump |
| Cyber Dumbbell Tier 8 | 500x | 100.0M | 2.5x jump |
| Galaxy Dumbbell Tier 9 | 1.5Kx | 10.0B | 3.0x jump |
| Universal Dumbbell Tier 10 | 5.0Kx | 1.0T | 3.3x jump |
Cost Efficiency shows the multiplier jump from the previous tier. The biggest early jumps are Iron (2x) and Golden (2.4x from Steel).
2 Best Pets for Muscle Gain
Your equipped pet multiplies every step's muscle output. The top pets for muscle gain offer massive bonuses that stack with dumbbells and rebirth. Here are the top 5 pets ranked by muscle bonus:
3 Rebirth Multiplier Stacking
Rebirth multipliers are the biggest long-term power multiplier in the game. Unlike dumbbells and pets, rebirth bonuses are permanent and require no inventory slot. Each rebirth level compounds with your other multipliers.
Example at Rebirth Level 10:
Example at Rebirth Level 17 (max):
The difference between Rebirth 10 and Rebirth 17 is a 13.3x multiplier increase, which is why reaching max rebirth is a game-changing goal. Use our rebirth calculator to plan your rebirth strategy.
Boost Timing Strategy
Boosts give a temporary 2x multiplier on top of everything else. Proper timing maximizes their value:
- Boost + New Dumbbell: Just bought a new dumbbell? Activate a boost right after to double the immediate impact of your upgrade.
- Boost + Rebirth: Rebirth first, then boost. You regain muscle faster with both multipliers active.
- Boost + Long Session: Only use boosts when you can play for the full duration. Stepping away wastes precious multiplier time.
- Free Boosts from Codes: Our codes page lists all active codes that include free boosts. Check it before each play session.
- Auto-Walk: If the game supports auto-walk or treadmills, activate them during boosts for hands-free muscle gain.
Quick Muscle Priority List
- 1. Upgrade your dumbbell to the next available tier (biggest immediate impact).
- 2. Equip your pet with the highest muscleBonus.
- 3. Rebirth when you have beaten all available opponents.
- 4. Use boosts during dedicated play sessions.
- 5. Redeem free codes for bonus Wins to afford upgrades faster.
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Last updated: 2026-05-31