The triangle symbol is widely used as the symbol for asexuality. For most people, asexuality is a mysterious thing to those who aren't asexual and it continues to not be that well understood among sex researchers, which makes sense because sexual health and science comes from many observational studies. Asexuality is by nature the absence of all sexual behavior, making it very hard to study. However a new review of scientific literature on asexuality published in the Journal of Sex Research showed that more sex researchers are paying closer attention to it.