Some bands are sold separately. Apple Watch Series 2 has a water resistance rating of 50 meters under ISO standard 22810:2010. This means that it may be used for shallow-water activities like swimming in a pool or ocean. It is also safe to wear it while showering or in a hot tub.
B12. Vitamin B12 is a water-soluble vitamin. This means it's not stored in the body and you must consume it every day. If you take in too much of it, your body will simply dispose of the excess in your urine. Strict vegans who eat no animal products whatsoever might need to take supplements on a regular basis.n adults, too much iron can increase the risk of heart disease and other health problems. To prevent problems, always talk to your doctor before taking iron supplements. Women 19 to 50 years of age need 18 mg of iron per day. Men over 19 need 8 mg per day.
Vitamin B12 is also said to help some sleep disorders, some mental disorders and slow the progression of dementia in the elderly. Supplement makers also say vitamin B12 supplements can help treat conditions such as Lyme disease, gum disease, some skin infections, liver disease and kidney disease. vitamin B12 deficiency has a wide range of symptoms. Someone with low vitamin B12 may lose their appetite, lose weight or feel tired and weak. Depression, poor memory and trouble thinking can all be symptoms of a vitamin B12 deficiency.