Inclusion Criteria:  Adult GI Cancer patients admitted for elective gastrointestinal surgery. Patients with an expected hospitalstay of at least 72 hours. Able to be able to read and speak English. Must have access to internet or use of mobile device for FitBit.  Exclusion Criteria:  <18 years of age. Night shift workers. Obtained from job history, any patient >/= 2 days per week, within the last six months prior consenting, are not eligible.