Breast cancer is ranked the most common cancer among Canadian women, with statistics showing that 1 in 8 women will be diagnosed with breast cancer in her lifetime. While advanced treatments contribute to higher survival rates, the quality of life to which the breast cancer survivors live is negatively affected. The psychological and physical impact of breast cancer is a challenge during and after treatment, as treatment leave sequalae for breast cancer survivors including fatigue, fear of cancer recurrence, body image issue, depression, all of which lead to a sedentary lifestyle. A sedentary lifestyle is associated with weight gain, which contributes to accumulation of fat tissue. An excess amount of weight that contributes to a high body mass index greater or equal to 25 kg/m2 is associated with negative health outcomes including cardiovascular and metabolic diseases and co-morbidities. Particularly in breast cancer survivors, fat tissue contains properties that produce estrogen, a hormone that promotes the development of breast cancer, hence increasing the risk of recurrence of breast cancer. The inflammatory properties of fat tissue also promote the development of breast cancer. Therefore, while the survival rates of breast cancer increase, emphasis to the management of body weight should be addressed. The combination of physical activity and healthy nutrition is widely known to manage body weight in breast cancer survivors. However, the level physical activity achieved by breast cancer survivors are low, particularly women with obesity.