1. Self-experimentation aimed at improving health, performance, or well-being through diet, exercise, or technology
   "He practised biohacking by tracking his sleep patterns and adjusting his diet"
    
2. The use of DIY biology techniques to modify living organisms, often outside traditional laboratory settings; may involve controversial or illegal practices
   "Their biohacking project aimed to create glow-in-the-dark plants, but some practitioners engage in more controversial experiments"
    
3. The use of technological implants or devices to enhance human capabilities
   "The conference showcased various biohacking innovations, including subcutaneous chip implants"

Encyclopedia: Biohacking