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Key Takeaways B12 supports healthy hair and skin indirectly through red blood cell production, oxygen delivery to follicles, and the rapid cell division that hair and skin depend on
## Day-by-Day Breakdown: Pros and Cons ### Monday **Pros:** Fresh start to the week
Aim for roughly 1.21.6 grams of protein per kilogram of body weight daily, paired with resistance training
Rights and permissions About this article Cite this article Barrera, J., Sandoval, D., D'Alessio, D
van der Velpen V, Teav T, Gallart-Ayala H, Mehl F, Konz I, Clark C, et al
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