The intended pool of our volunteer subjects will be from residents, attendings, hospital staff, and medical students in the hospital. Only healthy volunteers (as described previously) will be allowed to participate. Volunteer subjects from the hospital will be instructed to only participate after their work shifts or on their days off from work so as not to interfere with their job duties. The consent form will clearly specify that their participation in the study will not impact their academic status or employment. The subjects will also fill out a short data collection form that will have age, gender, known medical problems, medications, and allergies. The subjects will designate their weight in this consent form.