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Symptoms of a vitamin B12 deficiency include: Anemia Fatigue and weakness Dizziness Memory loss or concentration Rapid heartbeat Excessive bruising Soreness of the mouth or tongue Although there is no solid medical research to support these claims, many people believe that Vitamin B12 is helpful in improving concentration and boosting energy, as well as preventing or improving the following conditions: macular degeneration, a weakened immune system, infertility, sleep disorders, allergies, asthma, skin disorders and heart or kidney problems
But it doesnt have to be this way
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Some lower-quality supplements use the oxidized form, which your body then has to spend energy converting before it can use it
If you keep this up for 3 months, your endurance training program may help you increase your muscle mass by 7% to 11%, according to research
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