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The fascia experiences repetitive micro-trauma with each step, essentially re-injuring the tissue before healing can complete
In other words, toxicity from B12 is extremely rare
Cycling protocols of four to six weeks on, four to six weeks off align with the biology of connective tissue repair and represent a conservative default in the absence of long-term human safety data
Supplements can still be effective, especially if you're looking to maintain your B12 levels over time
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