ImpRoving hEalth behaviourS for LIfe After ENdometrial CancEr Trial

Inclusion Criteria: * ≥ 18 years old * Histologically confirmed endometrioid adenocarcinoma (low-grade), FIGO 2009 stages I to III. * 1 month to 10 years post-surgery and completion of adjuvant treatment. * BMI ≥25 and ≤45 kg/m2. * Willing and able to adhere to the study interventions and assessments * Seeking best weight using the readiness to change questionnaire. * Have a cell phone compatible with the Fitbit app with internet access and Bluetooth capabilities. * Able to speak, read and understand English. Exclusion Criteria: * Recurrent (local, regional, or distant) or metastatic EC. * Abnormal (i.e., mutated) p53 status in combination with FIGO 2009 stage III or IV * Weight fluctuations (±5 kg) within the previous 3 months. * Planned surgery in the next 6 months. * Previous bariatric surgery. * Uncontrolled thyroid disorder * Type 1 diabetes. * Type 2 diabetes with HbA1c \> 10% or are taking insulin, sulfonylureas, or GLP-1 agonists. * Taking corticosteroids. * Taking anti-obesity drugs. * Current smoker (of any type, e.g e-cigarettes, tobacco, marihuana, vaping) * Self-report \>90 moderate-intensity min/week of aerobic physical activity on average over the past three months. * Potential safety risk with exercise or maximal exercise testing screened with the 2023 Physical Activity Readiness Questionnaire (PAR-Q+)53, signs and symptoms of CVD, and any of the American Heart Association's absolute or relative contraindications to exercise testing. * Physical or mobility …