Jerry tries to manage his stress by tuning in to every sensation in his body, from the itch in his lower back to the flutter of an eyelid. which stress management technique is he using

Jerry is using the mindfulness technique.

Mindfulness is a psychological process which involves the focus of one's attention to experiences of the present moment. This process involves meditative techniques and it has been used by clinical psychologists to help people deal with some psychological conditions. Mindfulness has been used to alleviate symptoms of depression, stress and anxiety.

Specifically for stress, psychologists use the mindfulness-based stress reduction program which combines mindfulness, meditation, yoga and body awareness practices.