If you want to lose fat — I'm a personal trainer, and this is why body fat percentage and mass matter

Man and woman holding a dumbbell in hand performing a bicep curl.

Body fat percentage and body fat mass aren’t the same thing, so if your goal is to lose fat and look more sculpted or defined, you’ll need to know the difference.

As a personal trainer, I’ve spent years helping clients build muscle and strength while losing fat — it’s a process called body recomposition.