Vitamin D3: Add K2 for a Boost
Vitamin D3 + K2: The Stack You Didn’t Know You Needed (But Definitely Do)
If you lift, care about your health, or just want to function like a semi-decent human being, you need to be paying attention to Vitamin D3 and K2.
No, it’s not the next trend in pre-workout stacks, and no, it’s not going to suddenly give you 3D delts. But if you’re skipping this combo, you’re leaving health and gains on the table.
Let’s explain.
What’s the Deal with D3?
You’ve probably heard of Vitamin D3 being called the sunshine vitamin. Cute, right? Except most of us live under artificial lights, work indoors, and only see sunlight when it’s time to mow the lawn in the summer.
Here’s what D3 actually does:
Helps you absorb calcium from food.
Boosts testosterone and immune function.
Improves mood, especially if winter turns you into an emotionally unavailable houseplant.
Regulates a whole bunch of hormonal processes that keep you from turning into a walking cortisol factory.
But—here’s the kicker—D3 brings calcium into your bloodstream. Great. Except... where does that calcium go?
Enter Vitamin K2: The MVP You’ve Been Ignoring
Vitamin K2 is like the project manager your body needs but never hires. D3 says, “Hey, calcium’s here!” and K2 is like, “Cool, send it to the bones and teeth, not the arteries.”
If you’re slamming D3 without K2, that calcium can start building up in your arteries (yes, actual calcification), which is not ideal if you enjoy things like heartbeats and mobility.
K2 activates a couple of super important proteins:
Osteocalcin: Puts calcium into bones = strong, dense skeleton = you don’t snap under load.
Matrix Gla Protein: Keeps calcium out of soft tissues = your arteries stay clear = you don’t age like expired milk.
Long story short: K2 tells your body, “Hey, don’t be dumb with that calcium.”
Why They’re Better Together (A Real-Life Stack)
This is like the peanut butter and jelly of supplementation and micronutrients. The RPE and autoregulation of your recovery stack.
D3 increases calcium levels.
K2 makes sure that calcium doesn’t ruin your life.
Together, they support bone health, heart health, immune function, and hormonal balance.
And they do it without needing a marketing team or some influencer slamming them between sets of lat pulldowns.
So, Who Should Be Taking This?
You, if you train hard, eat clean, and still feel like your joints hate you.
You, if you live somewhere the sun doesn’t shine year-round.
You, if you care about your long-term health and want to keep lifting into your 40s, 50s, and beyond without becoming the Tin Man.
Spoiler: that’s pretty much all of us in Wyoming.
Dosing Basics (Don’t Overthink It)
Here’s the general protocol:
Vitamin D3: 2,000–5,000 IU daily (depending on your blood levels—yes, you should get tested).
Vitamin K2 (MK-7 form): 100–200 mcg daily.
Take with a fatty meal for better absorption. (So yes, avocado toast is finally useful.)
Bonus points if you find a combo supplement that includes both. Double bonus points if it’s third-party tested and not made in someone’s garage. Check out Revive at LifeTime Supply Co., wink wink.
Final Thoughts: Don’t Miss Out
Supplements aren’t magic. They’re tools. But D3 and K2 are two of the most underrated, overlooked, and straight-up essential tools in the box—especially if you lift, live in the modern world, and don’t want to fall apart by 35.
This isn’t hype. It’s just basic human physiology and common sense. So toss them in your stack, reap the long-term benefits, and go back to chasing your gains with a little more peace of mind.
Your bones and your future self will thank you.