With the rise of fitness apps, health-monitoring technology and their influence on our media, many people now track aspects of their daily lives such as sleep, exercise, heart rate, productivity, and even mood. Supporters of such argue that these tools encourage healthier habits and help people make informed decisions about their physical and mental well-being, whilst keeping themselves aware. Others, however, believe that constant monitoring can be obsessive and cause people to rely too heavily on data rather than their own feelings or instincts. Critics also raise concerns about privacy and the commercialization of personal health information. The debate raises big questions about technology’s role in everyday life, internal and external, the difference between self-improvement and self-surveillance, and whether measuring every aspect of human behaviour ultimately helps or harms well-being.