Background: Physical activity, sleep, mental health, physical health, wellbeing, quality of life, cognition, and functioning in people who experience psychosis are interconnected factors. People experiencing psychosis are more likely to have low levels of physical activity, high levels of sedation, and sleep problems. Intervention: An eight-week intervention; including the provision of a Fitbit and its software apps, sleep hygiene and physical activity guidance information, as well as three discussion and feedback sessions with a clinician. Participants: Out of a sample of 31 using an early intervention psychosis (EIP) service who took part in the intervention, fifteen participants consented to be interviewed—9 (60%) males and 6 (40%) females, age range: 19 - 51 years, average age: 29 years. Method: In-depth interviews investigating patient experience of the intervention and its impact on sleep, exercise, and wellbeing were undertaken. Thematic analysis was applied to analyse the qualitative data and content analysis was used to analyse questions with a yes/no response. Results: Most of the participants actively used the Fitbit and its software apps to gain information, feedback, and set goals to make changes to their lifestyle and daily routines to improve quality of sleep, level of physical activity, and exercise. Conclusion: The intervention was reported to be beneficial, and it is relatively easy and low cost to implement and therefore could be offered by all EIP services. Furthermore, there is potential value for application in services for other psychiatric disorders, where there is often a need to promote healthy lifestyle, physical activity, and effective sleep.