Metabolism holds potential as both a crucial topic and an analytical tool for our current biopolitical moment, for understanding the agency and significance of material forces as they move into and through bodies. From this vantage point, this article suggests practicing a metabolic gaze by reading together metabolism and contemporary art. It discusses ways of defining metabolism that might be productive in helping to produce tools and touchstones for metabolic readings, before presenting examples of artworks that might be interestingly illuminated by light of this sign.