What is the definition of Metabolism Engineering?

Metabolism engineering, my friend, is like the high-stakes chef of our body's biochemical kitchen. It's the art and science of tweaking the recipes of our cells, optimizing their energy production and waste removal. Imagine a world where we've got scientists genetically rewiring our metabolism to make us glow in the dark, or at least, glow enough for the next big fashion show.

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Edgy example sentence: "Metabolism engineering finally convinced the FDA to allow us to sell 'upercharged' coffee beans that supposedly boost our metabolism faster than a cheetah on a treadmill, but we're still waiting for a magic pill to make us burn calories at 10 AM every morning."