Technologies for monitoring a health-risk condition of a user include a virtual reality compute device having one or more near infrared (NIR) sensors. The virtual reality compute device presents a virtual reality (VR) presentation to the user. The virtual reality compute device produces sensor data through the one or more NIR sensors that is indicative of a heart rate of the user and a blood pressure of the user while the VR presentation is presented to the user. The virtual reality compute device determines whether the user is in a health-risk condition based on a comparison of the heart rate of the user to a heart rate safety threshold and a comparison of the blood pressure of the user to a blood pressure safety threshold. The virtual reality compute device performs a health-risk condition response in response to a determination that the user is in the health-risk condition.