Effects of short-term food deprivation on interoceptive awareness, feelings and autonomic cardiac activity

► 20 healthy women were exposed to 24 h of fasting in a controlled setting. ► Interoceptive awareness was assessed by using a heartbeat tracking task. ► Also, hunger and cardiac autonomic activity were assessed. ► Cardiac interoceptive awareness was improved via changes of autonomic cardiac activity. ► The increase of interoceptive awareness was positively related to felt hunger.