Which of the following is NOT considered a risk group for AIDS?

The correct answer identifies individuals who participate in high exercise programs as not being considered a risk group for AIDS. This is because the primary risk factors associated with HIV/AIDS transmission primarily involve behaviors and certain health conditions rather than lifestyle choices like exercise.

The other groups listed have established links to the transmission of HIV. Homosexual and bisexual men are considered high-risk due to the nature of sexual practices that may increase exposure to the virus. Intravenous drug users are at risk primarily due to sharing needles, which can transmit HIV. Newborns of infected women are vulnerable to HIV transmission during childbirth or through breastfeeding.

Thus, individuals engaging in high exercise programs do not have a direct connection to HIV transmission, distinguishing that group from those who actively partake in behaviors associated with an increased risk for acquiring AIDS.