It appears that you find arm tickling enjoyable perhaps because it provides a form of self-soothing.
While individual experiences with tickling are highly subjective, the enjoyment you derive from having your arms tickled likely stems from a combination of factors:
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Sensory Input: The light, repetitive touch of tickling stimulates nerve endings in your skin. This sensory input can be pleasurable for some people, depending on its intensity and the specific area being tickled. The arms, for many, are less sensitive and vulnerable than areas like the ribs or feet, making the sensation less likely to trigger a negative reaction.
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Psychological Association: You may have developed a positive association with arm tickling over time. Perhaps it was a playful interaction you experienced in childhood or with a loved one. These positive memories can contribute to the enjoyable feeling you now associate with the sensation.
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Relaxation and Comfort: For some, the repetitive nature of tickling, especially on the arms, can be calming and relaxing. It can be akin to a gentle massage or stroking, promoting a sense of comfort and security. This calming effect could be your primary reason for enjoying it.
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Social Connection: If another person is doing the tickling, it can strengthen social bonds and create a feeling of intimacy and connection. The act of playful touch can release endorphins, contributing to a feeling of happiness and well-being. However, since the reference hints at self-soothing, this may be less of a factor in your specific case.
It's important to note that the sensation of tickling can be perceived very differently by different individuals. Some people find it extremely unpleasant, while others, like you, find it enjoyable. This difference in perception highlights the subjective and complex nature of this sensory experience.
In conclusion, your enjoyment of arm tickling is likely a result of a combination of sensory stimulation, positive psychological associations, and a relaxing effect, leading to a self-soothing experience.