• You and your partner will be asked to complete: 

• A 30-minutes online questionnaires 3 times over the course of 3 months; 

• An online discussion task with your partner;  

• 5-min nightly diary on your lifestyle habits and couples interaction during the day for 2 weeks; 

• Weigh yourself 6 times over the course of 3 months 

•  The study will be conducted online. Both partners have to participate. Total participation time is about 3.5 hours over the course of 3 months. 

You are: 

• Overweight and trying to improve your diet and/or physical activity   

AND you both:   

• Have been living together for at least one year  

• Are aged 18 years or older  

• Are currently living in Canada   

• Have access to a scale at home to weigh yourself  

• Speak English or French  

• Have access to an electronic device allowing videoconferencing  

Individuals who meet any of the following criteria cannot participate in the study:  

• People with an eating disorder (anorexia or bulimia nervosa) diagnosed by a medical professional  

• Are currently pregnant or breastfeeding, or planning to become pregnant in the next 6 months   

Earn up to $100 as a couple for participating in this study.