Inclusion Criteria:

- breast cancer survivor

- overweight or obese (BMI of 25 or greater)

- must have breast cancer related lymphedema

- at least 2 months post-treatment (e.g. surgery, chemotherapy, or radiotherapy) but
there will be no upper limit on time elapsed from diagnosis

- the eligible age range will have no lower or upper limit.

- currently free of cancer

Exclusion Criteria:

- medical conditions or medications that would prohibit participation in an exercise
program or would negatively impact our ability to test our primary aims

- inability to walk for 6 minutes unaided

- extremely obese (body mass index greater or equal to 50 kg/m2)

- plans for additional (e.g. curative or reconstructive) surgery during the study
period

- self-report of weight-lifting within the past year

- already engaging in 3 or more times weekly aerobic activity of moderate intensity

- planning to move away from the area over the next year

- current use of weight loss medication (OTC or prescription)

- self-report of alcohol or substance abuse within the past 12 months, including
at-risk drinking (current consumption of more than 14 alcoholic drinks per week)

- weight loss of greater than 10 % in the past 3 months

- history of bariatric surgery

- women who are pregnant