Inclusion Criteria:

- Patients will be eligible if they have any of the following surgical procedures
performed by an attending on the Breast Service:

SLNB alone Axillary lymph node dissection (ALND) alone Total Mastectomy TM (+/-
reconstruction) with SLNB or ALND Breast conserving therapy (BCT) with SLNB or ALND

- Age > 18 years

- Planned to undergo adjuvant post-operative chemotherapy with or without radiation at
MSKCC and have not yet started chemotherapy

Exclusion Criteria:

- Undergoing TM or BCT without SLNB

- Having had prior breast cancer treated with surgery

- Unable to participate in a exercise program related to other medical problems

- More than 8 weeks post surgery.

- Having a concurrent cancer in addition to breast cancer

- Who have had any type of chemotherapy in the past two years