Three white and black supplement containers: a large whey protein powder jar, a black bottle of Magnesium capsules, and a whi
Three Momentous supplement containers: white Whey Protein Isolate powder, black Magnesium capsule bottle, and white Creatine
Three Momentous supplement containers: large white tub of Whey Protein Isolate, black bottle of Magnesium, and white containe
Chocolate whey supplement facts
vanilla whey supplement facts
unflavored whey supplement facts
Creatine 30 serving supplement facts
Magnesium L-Threonate Supplement Facts
Three white and black supplement containers: a large whey protein powder jar, a black bottle of Magnesium capsules, and a whi
Three Momentous supplement containers: white Whey Protein Isolate powder, black Magnesium capsule bottle, and white Creatine
Three Momentous supplement containers: large white tub of Whey Protein Isolate, black bottle of Magnesium, and white containe
Chocolate whey supplement facts
vanilla whey supplement facts
unflavored whey supplement facts
Creatine 30 serving supplement facts
Magnesium L-Threonate Supplement Facts
4.8
Rated 4.8 out of 5 stars
6,674

Tim's Performance Stack

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$ 133.85 $ 133.85
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Three white and black supplement containers: a large whey protein powder jar, a black bottle of Magnesium capsules, and a whi
Tim's Performance Stack
Tim's Pe...

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Bestselling author, podcaster, and lifestyle guru Tim Ferriss believes in the power of routine and consistency—and a trusted part of his daily routine is this Performance Stack.

 

Consisting of Grass-Fed Whey Protein, Creatine, and Magnesium L-Threonate, this stack helps Tim achieve optimal cognitive performance, quality sleep, and enhanced recovery so that he can continue performing at his best when it matters most. 

Everything at a Glance

Gluten Free

Protein:

  • Promotes lean muscle mass and muscle growth
  • Supports recovery when taken post-exercise
  • Low calorie way to get protein into your diet

Creatine:

  • Helps regenerate adenosine triphosphate (ATP), which is the main source of energy for muscle and brain cells
  • May help support focus and cognition by increasing energy availability to your brain
  • Increases the energy available to muscles during training, resulting in being able to train harder
  • Helps develop lean muscle mass

Magnesium L-Threonate:

  • Enhances the quality of sleep and produces a calming effect
  • Helps support cognitive function, including memory, learning, attention, and focus
  • Helps increase magnesium levels in the brain, which may promote cognitive performance and overall brain health
  • Protein is a foundational macro that we actually need more of as we age due to increased muscle mass degeneration. It supports muscle performance, growth, and immune function.
  • Creatine is the main source of energy for your body—it can be used by your muscles or your brain, contributing to improved physical endurance and cognitive performance over time.
  • Magnesium L-Threonate helps to facilitate muscle contraction, regulate blood pressure, and synthesize DNA and proteins. It can penetrate the blood-brain barrier at higher levels than other forms of magnesium, which makes it the most bioavailable magnesium for the brain. It aids in the transmission of nerve signals, regulates neurotransmitter levels, and fuels energy production in brain cells. It also supports enzyme reactions, nerve health, protein synthesis, and muscle function.

Protein: Mix 1 scoop with 12 fl oz of your preferred liquid daily

Creatine: Mix 1 scoop with 6-8 fl oz of your preferred liquid daily

Magnesium L-Threonate: Take 3 capsules 30-60 minutes before sleep

  • Grass Fed Whey Protein Isolate:
    Chocolate: Grass-fed Whey Protein Isolate, ProHydrolase®, Natural Flavors, Cocoa, Salt Monk Fruit Extract, Stevia
    Vanilla: Grass-fed Whey Protein Isolate, ProHydrolase®, Natural Flavors, Salt, Monk Fruit Extract, Stevia
    Unflavored: Grass-fed Whey Protein Isolate, ProHydrolase®

    Our formula includes Grass-Fed Whey Protein Isolate, the highest quality protein powder available. Whey Isolate is easily absorbed with less lactose and more protein per volume than cheaper Whey Concentrate. With more protein for less calories, it’s the most efficient way to support muscle growth and recovery while delivering clean nutrition. We’ve also added ProHydrolase®, an enzyme that improves protein digestion and absorption for maximum benefit.
  • Creatine:
    Creapure® Creatine Monohydrate

    Momentous Creatine is sourced from Creapure®, the purest form of creatine monohydrate available and widely considered to be the gold standard of creatine. While the majority of creatine on the market is sourced from China, ours is a single-sourced ingredient from Germany with no additives, sweeteners, or other ingredients.
  • Magnesium L Threonate:
    Magnesium 145mg (from 2g Magtein® Magnesium L-Threonate)
    Other Ingredients: Rice Flour, Hypromellose (Capsule), Magnesium Stearate, and Silica

Products

  • Grass-Fed Whey Protein

  • Creatine

  • Magnesium L-Threonate

Frequently Asked Questions

Yes, when taken as directed and combined with a balanced lifestyle, this bundle is safe for long-term use.

While this bundle is designed to be comprehensive, consult with a healthcare professional when combined with other supplements.

Most users report feeling noticeable changes within a few weeks, but for optimal results, we recommend consistent use for 60 days.

4.8
Rated 4.8 out of 5 stars
Based on 6,674 reviews
Total 5 star reviews: 5.8k Total 4 star reviews: 535 Total 3 star reviews: 153 Total 2 star reviews: 63 Total 1 star reviews: 77
96%would recommend these products
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Reviews Summary
Customers say this supplement is truly tasteless and dissolves easily in beverages without leaving grit or aftertaste. Many appreciate that it mixes well with coffee, smoothies, and other drinks without altering flavor. Users frequently mention the product is gentle on their stomachs with no digestive issues or bloating. Common feedback includes improved workout performance, strength gains, and faster recovery. Many reviews highlight the clean, third-party tested quality and NSF certification. Some note the container design makes scooping difficult when the product gets low, and a few mention price concerns.
Customers Talked About
6,674 reviews
  • MG
    melissa g.
    Verified Buyer
    Product Standouts Ease of Use, Trust and Transparency, Results
    4 hours ago
    Product Standouts Ease of Use, Trust and Transparency, Results
    Reviewing
    Magnesium L-Threonate
    Rated 5 out of 5 stars
    Great product

    I have noticed that according to my Fitbit tracker I’ve been getting more deep sleep since I started taking Magtein and I wake up feeling well rested. While it’s a little daunting to take 3 pills a night, I think it’s worth it. I had tried magnesium threonate in another brand and I did not get the same results

  • BT
    Bruno T.
    Verified Buyer
    19 hours ago
    Reviewing
    Whey Protein Isolate
    Rated 5 out of 5 stars
    smooth

    Protein supplements I have tried and most have left me feeling bloated after a while. I was reading Arnold's daily email, and this was recommended. I compared it to others and this one seemed to come out on top, kind of pricey but I am glad I tried it. On my second batch and I can tell you from my experience it goes down smooth and I haven't felt bloated. Seems really clean and easily digested. I will be ordering more.

  • E
    Erik
    22 hours ago
    Reviewing
    Whey Protein Isolate
    Rated 5 out of 5 stars
    5 Stars

    Awesome as always!

  • EW
    Elizabeth W.
    Verified Buyer
    Product Standouts Trust and Transparency, Results, Ease of Use
    23 hours ago
    Product Standouts Trust and Transparency, Results, Ease of Use
    Reviewing
    Creatine
    Rated 5 out of 5 stars
    Trusted source.

    I just began working out and was not sure about using creatine. I will say that I'm glad I found Momentus. As with all I buy, I want to make sure I'm getting quality. Momentus has been a brand I trust thus far.

  • RK
    RAMESH K.
    Verified Buyer
    Yesterday
    Reviewing
    Magnesium L-Threonate
    Rated 5 out of 5 stars
    Excellent supplement

    I use the magnesium L-threonate regularly every night (3 capsules). I track my sleep on my oura ring and garmin watch. These trackers do show consistent deep sleep and quantity of deep sleep has shown an improvement since I started using Mag L-threonate