Body hacking

Grinders are people who apply the hacker ethic to improve their own bodies with do it yourself cybernetic devices or introducing Biochemicals into the body to enhance or change their bodies' functionality. Many grinders identify with the biopunk movement, open-source transhumanism, and techno-progressivism. The Grinder movement is strongly associated with the body modification movement and practices actual implantation of cybernetic devices in organic bodies as a method of working towards transhumanism, such as designing and installing do-it-yourself body-enhancements such as magnetic implants. Biohacking emerged in a growing trend of non-institutional science and technology development.
According to Biohack.me, "Grinders are passionate individuals who believe the tools and knowledge of science belong to everyone. Grinders practice functional extreme body modification in an effort to improve the human condition. [Grinders] hack [them]selves with electronic hardware to extend and improve human capacities. Grinders believe in action, [thei]r bodies the experiment."
"Biohacking" can also refer to managing one's own biology using a combination of medical, nutritional and electronic techniques. This may include the use of nootropics, non-toxic substances, and/or cybernetic devices for recording biometric data (as in the Quantified Self movement).
Ideology.
Grinders largely identify with transhumanist and biopunk ideologies. Transhumanism is the belief that it is both possible and desirable to so fundamentally alter the human condition through the use of technologies as to inaugurate a superior post-human being. Kara Platoni categorizes such technological modifications as "hard" biohacking, noting the desire to expand the boundaries of human perception and even create "new senses".
Biopunk is a techno-progressive cultural and intellectual movement which advocates open access to genetic information and espouses the liberating potential of truly democratic technological development. Like other punk movements, Biopunk encourages the DIY ethic. "Grinders" adhere to an anarchist strain of biopunk that emphasizes non-hierarchical science and DIY.
Cyborgs and cyborg theory strongly influence techno-progressivism and transhumanism and are thus influential to both the DIY-bio movement and grinder movement in general. Some biohackers such as Grinders and the British professor of cybernetics Kevin Warwick actively design and implement technologies which are integrated directly into the organic body. Examples of this include DIY magnetic fingertip implants or Warwick’s "Project Cyborg". Cyborg theory was kickstarted in 1985 with the publication of Donna Haraway’s influential "Cyborg Manifesto" but can be traced back all the way to Manfred Clynes and Nathan Klines’ article, "Cyborgs and Space". This body of theory criticizes the rigidity of ontological boundaries and attempts to denaturalize artificial dichotomies.