This study will examine the immediate (acute) effects of a single, 30-minute body awareness session on brain activity and interoceptive accuracy in healthy young adults aged 18-25. Participants will be randomly assigned to one of two groups: an intervention group, which will complete a structured body awareness exercise based on Basic Body Awareness Therapy, or a control group, which will rest quietly for the same amount of time without any specific instructions.
Before and after the session, brain activity will be recorded using a portable, 8-channel EEG device, and interoceptive accuracy will be measured with a heartbeat perception task, in which participants try to count their own heartbeats without checking their pulse. The main goal is to determine whether a single body awareness session produces measurable changes in EEG brain wave patterns (theta, alpha, beta, and gamma bands) and in the accuracy of heartbeat perception, and whether these two types of change are related to each other.