Vitamin D3 + K2 stack, but does K2 even matter?
So I've been hearing a lot about stacking vitamin D3 with K2, and like, I get the hype, but does K2 actually do anything significant? Is it just some fancy add-on or does it really play a role in absorption or whatever? I'm just curious if I should even bother or if I can save my cash for more protein powder instead. Thoughts?