Exercise and Diet Intervention in Promoting Weight Loss in Obese Patients With Stage I Endometrial Cancer

Inclusion Criteria:

* Clinical stage I EC
* Low grade disease positive for estrogen and progesterone receptors
* Body mass index (BMI) \>= 30 kg/m\^2
* No history of any musculoskeletal, cardiorespiratory or neurological diseases that preclude the participation in exercise
* Self ambulatory and without use of assistive walking devices
* Is not a candidate for immediate hysterectomy, following evaluation by a physician, due to desire to preserve fertility, due to degree of obesity, due to comorbidities, or due to patient refusal of hysterectomy
* Must agree to take progestin agents (i.e., oral agents or MIRENA intrauterine device \[IUD\] which are accepted treatments for low grade uterine malignancies to control their disease while the intervention is ongoing)

  * Note: potential participants WILL NOT be asked to delay surgery to participate in this pilot study

Exclusion Criteria:

* Patients with metastatic disease
* BMI =\< 29.9 kg/m\^2
* History of any musculoskeletal, cardiorespiratory or neurological diseases that preclude the participation in exercise
* Is not self ambulatory and relies on the use of assistive walking devices
* Is a candidate for immediate hysterectomy, following evaluation by a physician
* In judgement of a physician, is not a candidate for progestin agents