++Say no to tanning. There's no such thing as a safe tan, whether you're inside or outside. It's a myth that indoor tanning is a safer alternative to sun tanning. Tanning beds, tanning booths, and sunlamps expose you to intense UV radiation, which increases your risk of skin cancer and skin damage.
++Give up the vitamin D excuse. Tanning isn't a safe way to get vitamin D. If you're concerned about your vitamin D levels, talk to your doctor about the sources that are best for you.
++Get to know your skin. Skin cancer is easier to treat when caught early, so get to know your skin and watch for changes.
1)Averages could be done. <span>2)Experiments or "works" could be repeated many times. </span> <span>3)Limiting factors likely to introduce errors could be avoided.</span>
