Participants will engage in a Virtual Reality (VR)-based exergame session using the PowerBeatsVR application. The session will include rhythm-based exercises, such as punching targets and dodging obstacles, aimed at promoting physical activity during a short break in the workplace.

Participants will engage in a Mixed Reality (MR)-based exergame session using the PowerBeatsVR application in MR mode. This condition allows participants to interact with virtual elements while maintaining awareness of their physical surroundings.

Participants will remain seated in a quiet room for the same duration as the VR and MR sessions. During this time, they will be asked to rest without engaging in any physical activity. Talking, using mobile devices, or interacting with others will not be allowed to ensure a consistent resting condition across participants.

Virtual Reality Exergame (VR) Participants will engage in a 5-minute fully immersive Virtual Reality (VR) exergame session using the PowerBeatsVR application. This intervention takes place in a virtual environment where participants perform rhythm-based physical activities such as punching targets and dodging obstacles. The VR session isolates participants from their real-world surroundings, offering a highly immersive experience designed to promote physical activity and assess its physiological and psychological effects.

Executive functions will be assessed using the PEBL Victoria Stroop Test. This test evaluates cognitive control, reaction time, and error rates in different experimental conditions. To eliminate learning effects, each participant will complete two practice trials before the experimental session. The test consists of three phases (1. Neutral words (words without color conflict), 2. Congruent words (words where the meaning matches the text color), 3.Incongruent words (words where the meaning differs from the text color).

Participants will be instructed to identify the color of the word as quickly and accurately as possible. Reaction times (in milliseconds) and error rates will be recorded.

Participants' mood states will be assessed using the Positive Affect subscale of the Positive and Negative Affect Schedule (PANAS). PANAS is a widely used self-report instrument designed to measure two distinct dimensions of affective states: Positive Affect (PA) and Negative Affect (NA). However, in this study, only the PA subscale will be utilized. This decision is based on the study's focus on the short-term affective benefits of VR and MR exercise, as physical activity is predominantly linked to improvements in positive emotions rather than significant reductions in negative affect. Additionally, since negative emotions may not exhibit substantial changes in a single-session exercise context, analyzing only positive affect provides a clearer understanding of the intervention's psychological benefits.

Heart rate will be measured using a Polar H10 chest strap sensor at two time points: pre-exercise and during the session. All HR data will be recorded in real time via the Polar Flow application. The HR measurements will be used to assess the physiological load of the exercise and compare differences across conditions.