> - This guy was eating at a very unhealthy calorie deficit (1000). You should never go over 500 kcal deficit if you don't want to lose loads of muscle in the process.
It is not absolute that the "unhealthy" caloric deficit is daily basis. There are some researches[1] saying that you can lose fat mass while preserving (or even gaining) lean mass while fasting and doing workout.
It is not absolute that the "unhealthy" caloric deficit is daily basis. There are some researches[1] saying that you can lose fat mass while preserving (or even gaining) lean mass while fasting and doing workout.
1. https://translational-medicine.biomedcentral.com/articles/10...