Physical Activity and Healthy Eating Among Young Adult Cancer Survivors

Inclusion Criteria:

* Current age 18-39 years at the time of consent
* Diagnosed with invasive cancer malignancy between the ages of 15-39 years
* Diagnosed with invasive malignancy in the last 10 years of diagnosis, and with no evidence of progressive disease or second primary cancers
* Completed active cancer directed therapy (cytotoxic chemotherapy, radiation therapy and/or definitive surgical intervention), except may be receiving "maintenance" therapy to prevent recurrences
* No pre-existing medical conditions(s) that preclude adherence to an unsupervised exercise program including cardiovascular disease, congestive heart failure, pulmonary conditions, renal disease, and severe orthopedic conditions
* Not currently meeting guideline recommendations of 150 minutes/week moderate to vigorous physical activity (self-report) and guideline recommendations for fruit and vegetable consumption (self-report)
* Have the ability to read, write and speak English
* Have access to the Internet on at least a weekly basis
* Possession and usage of an Internet e-mail address or willingness to sign up for a free email account (e.g., gmail)
* Have smartphone with internet access and text messaging plan
* Be willing to be randomized to any condition

Exclusion Criteria:

* History of heart attack or stroke within past 6 months
* Untreated hypertension, hyperlipidemia, or diabetes, unless permission is provided by their health care provider
* Health problems which preclude ability to walk for physical activity
* Report a diagnosis of psychiatric diseases (schizophrenia, bipolar disorder, depression leading to hospitalization in the past year), drug or alcohol dependency
* Report a past diagnosis of or treatment for a Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) eating disorder (anorexia nervosa or bulimia nervosa)
* Plans for major surgery (e.g., breast reconstruction) during the study time frame
* Current participation in another physical activity or weight control program
* Currently using prescription weight loss medications
* Currently pregnant, pregnant within the past 6 months, or planning to become pregnant within the next 6 months
* Currently exercising \> 150 minutes/week of moderate-to-vigorous intensity physical activity
* Currently consuming \> 5 servings of fruits and vegetables/day.