![Foods+high+in+Vitamin+B6[1]](https://athleticperformancetc.files.wordpress.com/2013/11/foodshighinvitaminb61.jpg)
A lack of vitamin D can have an adverse effect on your athletic performance, according to the journal, Nutrients. Additional research corroborates these findings, showing that there is a positive correlation between vitamin D levels and muscle strength.
According to the National Health and Nutrition Examination Survey (NHANES), at least 77% of Americans are vitamin D deficient. This is especially true in the northern states, where exposure to sunshine can be scarce during the winter season (the sun plays a vital role in your body’s natural vitamin D production).
You can boost your vitamin D by increasing your consumption of whole foods like fatty fish (mackerel, salmon, and tuna), milk (and other fortified dairy products), eggs, and oatmeal (and other fortified cereals).
You can also improve your vitamin D level by adding a supplement to your daily diet. Aim for 600 IU per day.
Get STRONGER, Get FASTER!
Your thoughts?
Athletic Performance Training Center 
I take a Vitamin D supplement daily – I read somewhere that if you take 2 tablets a day you should take them at different times of the day – that your body can’t absorb to much Vitamin D at a time – not sure if that is true – but I take 1 pill in am and 1 in pm
Vitamin D is a fat soluble vitamin, and is stored by the body. The recommended dose of vitamin D is up to 1,000 IU per day. There is a risk of toxicity with extremely high doses, over time. Probably no need to divide the dose, unless you just prefer to take it that way. Thanks for the comment!