Metabolism isn’t about willpower—it’s about biology. In this episode of the HUM Podcast (Well Yes), HUM co-founder Walter and functional medicine dietitian Sarah Greenfield, RD, break down what metabolism really is and how to support it in a sustainable, science-backed way.

From energy production and muscle mass to blood sugar balance, fiber, sleep, stress, and gut health, this episode explains why a healthy metabolism impacts far more than weight—including mood, cravings, digestion, hormones, and overall vitality.

🎧 In this episode, you’ll learn:

• What metabolism actually means (and why it’s more than calories)

• How muscle, mitochondria, and ATP drive energy

• Why fiber is the unsung hero of metabolic health

• How blo ...