Written By
Adam Gray-Hayward
Reviewed By
Paul Winsper, Chief Science and Performance Officer, AlterMe


Calories are complicated. But, understanding them is also crucial to reaching your body composition goals—whether that is figuring out your ideal calorie deficit for weight loss, or even a calorie surplus for those looking to gain muscle mass.

Explore how gut health affects energy, fatigue, and hormone balance. Learn how the microbiome impacts metabolism, nutrient absorption, and inflammation—and how to boost energy naturally.

Fuel better energy, stable blood sugar, and long-term health with simple nutrition strategies. Support your metabolism with the right balance of protein, carbs, fats, and micronutrients.