Keanu Reeves

To appear calm in stressful situations, one can implement simple changes such as having a relaxed posture and activating the vagus nerve.

Keanu Reeves, a Hollywood legend, has mastered how to appear calm in stressful situations despite his busy and high-stress lifestyle.

He pays attention to his posture and has learned to activate his vagus nerve, which helps him to remain calm in stressful situations. It is worth noting that these changes take time to master, but with practice, it comes naturally.