âTennis players often have problems with their knees, ankles, shoulders, hips, and wrists, so they really need to spend some time on those areas to get the tension out.â. This means that youâll be more likely to keep on truckinâ if you practice your poses off the court.
Normal value ranges for vitamin B12 vary slightly among different laboratories and can range anywhere between 200 to 900 pg/mL. The general consensus is values less than 200 pg/mL constitute a B12 deficiency.
According to the U.S. National Library of Medicine, the normal serum vitamin B12 level falls in a range of 200 to 900 picograms per milliliter.itamin B12 is naturally found in eggs, meats, poultry, seafood and milk products. Some foods, like cereal and bread products, are fortified with the vitamin. Although having a high serum level of vitamin B12 could indicate an underlying medical problem, the high level itself isn't detrimental.