Experimental: Prehabilitation Program

30 participants will be enrolled and will complete study procedures as follows:~* Enrollment at least 4 weeks prior to esophageal cancer surgery.~* In-person clinic visit with dietitian and physical therapist for assessments, and completion of baseline questionnaires with study coordinator.~* Adherence to daily physical function, dietary, and sleep recommendations and consumption of 5-day immunonutrition supplement.~* Regular electronic/phone-call check-ins with study staff.~* Telehealth appointment with physical therapist and dietitian prior to surgery.~* After surgery and during hospital admission, final visit with dietitian and physical therapist for assessments, and completion of questionnaires.~* 6-month follow-up period.