Beating the winter blues

[Casey]

Tons of vitamin D. It's perfectly possible to have less than optimal levels of that when there's almost no daylight, like up in norway. Vit D deficiency can contribute to feeling not too great.

Yeah this. Ever since I got my Vit D levels optimal through supplementation I noticed less depression. It's estimated that 1 billion people are deficient and more Vit D = more protein synthesis = more muscle mass.