What effect do vitamin B₁₂ injections have in healthy athletes? A) They increase red blood cell production. B) They increase oxygen delivery to cells. C) They delay the onset of fatigue. D) They have no effect.

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In healthy athletes, vitamin B12 injections do not have a significant effect on red blood cell production, oxygen delivery, or delaying fatigue, as these individuals typically have adequate vitamin B12 levels from their diet.

What Effect Do Vitamin B12 Injections Have in Healthy Athletes

What Effect Do Vitamin B₁₂ Injections Have in Healthy Athletes