Fit to Serve Act - Authorizes the Secretary of Defense (DOD) to provide for the dissemination to potential military recruits of information on healthy body weight. Includes in the information that may be provided healthy weight according to age, height, and gender, the risks of obesity, and achieving and maintaining a healthy weight. Authorizes the dissemination of such information both electronically and in writing.

Authorizes each military department Secretary to enter into joint use agreements with local governments in the vicinity of military installations in order to permit the use of athletic facilities at such installations by local civilians.