Today, the trend of contextualization and datafication has brought about the transformation of human cognition and behavior, and reintegrated the traditional concepts of “presence” and “absence”. Physical, digital and multi-meaning communication practice provides physical presence with more social relevance. Based on theories of “media context”, “media-body conception”, “body image”, this study emphatically discusses the new interaction among body, environment and information. Through semi-structured in-depth interviews, the research found that: in the context of fitness media technology, “contextualization” plays an important role in regulating, constructing and reconstructing users’ body image, and the result of its “embedding” or “extension” reflects the victory of technology or body; driven by technical elements such as light, electricity and sound, individual discipline and transform their data bodies by “gazing” others data bodies, in this process, the physical body is actually “absent”. Meanwhile, users began to rethink the body subjectivity in the process of the continuous interweaving and deepening of the “media-body-life” experience, thus realizing the activation of that. As the result, the cut and docile body becomes “more alive ”.