In comparison to cereal grasses like wheat, quinoa is higher in fat content and can provide valuable amounts of heart-healthy fats like monounsaturated fat (in the form of oleic acid). Quinoa can also provide small amounts of the omega-3 fatty acid, alpha-linolenic acid (ALA).
Yes, you can. However, some people may feel uncomfortable having sex during a woman's monthly period because it can be messy, and the presence of blood can be off-putting. Some people may also oppose it on religious grounds. There are a few risks associated with having sex during menstruation. HIV and a few other sexually transmitted infections (STIs) may be passed on more easily during a woman's period (both from the woman to the man and vice versa). To avoid catching HIV or other STIs, you should always use a condom when you have sex.
It doesn't matter if you're having a hot sexdream or a zombie apocalypse nightmare -- your penis gets hard during that period of the sleep cycle. But some men are physically unable to get erections, such as those who've suffered trauma to the nerves involved or who have nerve or blood vessel damage caused by diabetes.