FIG. 1 is a rear perspective view of a metabolic scanner showing my new design. FIG. 2 is a front perspective view of the metabolic scanner of FIG. 1. FIG. 3 is a side elevational view of the metabolic scanner of FIG. 1. FIG. 4 is a front elevational view of the metabolic scanner of FIG. 1; and, FIG. 5 is a top plan view of the metabolic scanner of FIG. 1.