If you’re interested in tracking macronutrients but aren’t sure how to get started, no worries. With the assistance of fitness apps and smartwatches, it’s easier to track macros than ever before. I’ll teach you the basics, gram by gram.

It may be small, but this endocrine organ controls whether you can eat ice cream and be lean or eat a salad and be overweight. How can you know if yours is operating properly?