Niacin opens blood vessels wider. Niacin is critical to energy production and proper circulation for long lasting erections. Niacin also has the ability to increase sensation all over the body, thus it plays an important role in heightening the total physical experience during sexual intercourse.hen you get the niacin flush, itâs an indication that the niacin is causing small blood vessels in your body to be expanded in size. This is a tremendous increase in blood flow. You experience a flushing of the skin, simply because there is more blood close to the surface of the body.
So, in this case, the two babies came from one egg. These kinds of twins are called identical twins You can remember it this way: fraternal twins each have their own DNA, while identical twins share theirs.
Rating Newest Oldest. Best Answer: DNA in siblings is actually closer to one another, than to the DNA in thier parents... On average, full siblings (share both biological parents) have 50% of their DNA in common, half siblings (share only one biological parent) have 25% of their DNA in common. . Source(s): http://www.dnasi.com/familystudies/sibli... aren't the following answers exactly what i said? glad i got two thumbs down for it.