
12 Week Muscle Building
Progressive hypertrophy plan engineered to add visible muscle.
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From competitive powerlifting to off-season conditioning - find the expert plan, coach and exercise breakdown that fits your goal, in minutes.
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The 12-week Onyx Hypertrophy block. A high-volume, RPE-driven plan built by competitive lifters to add visible muscle and brutal strength on the big lifts.
Meet the Onyx coaches
From strongman platforms to boxing rings - every Onyx coach trains hard, competes (or grinds) every week, and brings real-world experience to your programming.
Trending in articles
Coach-written breakdowns on the science that actually drives results - overload, fuel, recovery and the boring stuff that wins.
Athlete stories
The Onyx ecosystem turns months of training into measurable progress.
Nutrition & Supplements
Learn about the most effective supplements for performance, recovery, and overall health.

The most researched supplement for strength, power, and muscle growth.
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An easy and effective way to reach your daily protein intake.
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Increase energy, focus, and training performance.
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Support overall health and cover nutritional gaps.
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Essential fats that support the heart, brain, and joints.
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Important for recovery, muscle function, and sleep quality.
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Maintain hydration and improve endurance performance.
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The most researched supplement for strength, power, and muscle growth.
Learn more
An easy and effective way to reach your daily protein intake.
Learn more
Increase energy, focus, and training performance.
Learn more
Support overall health and cover nutritional gaps.
Learn more
Essential fats that support the heart, brain, and joints.
Learn more
Important for recovery, muscle function, and sleep quality.
Learn more
Maintain hydration and improve endurance performance.
Learn moreFree exercise library
Onyx programs

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