JYM Mass (2.3kg)

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Flavour: Chocolate Mousse
In stock (12 units), ready to be shipped


Muscle Growth* – Strength* -Energy*- Endurance* -Refuel*

  • 30g Protein
  • 32g CARBS
  • 280 CALORIES
  • 3g FIBER
  • <1g LACTOSE

“Each scoop of Mass JYM provides not only the perfect amounts of all three macronutrients but also the ideal ratio of macro types for each one. You’ll be hard-pressed to find a more perfect supplement for building lean muscle mass and strength than Mass JYM.”
Jim Stoppani, PhD

The Science Of Mass JYM
Mass JYM™ is a revolutionary mass-gain formula that has taken years to perfect. It’s the first of its kind, a true non-proprietary mass-gainer that fully discloses the specific types of protein, carbohydrates, and fat contained so that you know exactly how much of each macronutrient you’re consuming.

It’s not enough to know just the total amount of protein, carbs and fat that a mass-gainer provides – you need to know the precise amounts of each type of protein, each type of carb, and each type of fat. Otherwise, you won’t know if it’s a lean-mass-builder or just another “fat-gainer” made of cheap protein concentrate and sugar. I essentially designed Mass JYM to be Pro JYM™ plus an equal amount of carbs – primarily low-glycemic and the perfect (and patent-pending) fat blend.

Designed to the exact specifications as my award winning Pro JYM protein – each serving of Mass JYM delivers 30 grams of the highest-quality protein powder blend available. Mass JYM delivers 50% casein from micellar casein and milk protein isolate; 40% whey protein from cold-filtered whey protein isolate and milk protein isolate; and 10% egg white protein.

This protein blend provides just enough fast-digesting whey to quickly spike muscle protein synthesis, plus adequate amounts of slow-digesting casein to keep protein synthesis elevated for several hours after ingestion. Egg white protein provides a medium-digesting protein source that also provides higher levels of sulfur-containing amino acids as compared to dairy protein.*

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