Can You Build Muscle and Lose Fat While in a Calory Deficit?

There are some studies demonstrating that you can build muscle and loose fat while in a calory deficit, even it mats. You'll never do either thing to the best of your ability if you're trying to do both at the same time. Proteinis the biggest lever we have then, i would say, caloric surplus. Because with fat loss, like meak to week, you can start seeng differences. But with muscle alwin, you're talking about months.