The timing of when to drink BCAAs depends on your personal goals and preferences.
If you are taking BCAAs to support muscle growth and recovery, it is generally recommended to drink them before or during your workout. This can help to provide your muscles with the necessary amino acids for repair and growth.
If you are taking BCAAs for endurance performance or to reduce muscle breakdown during fasting or low-calorie diets, it can be beneficial to drink them throughout the day, in between meals, or before bed.
It's important to note that BCAAs are not a replacement for a healthy diet or adequate protein intake. They are meant to supplement your diet and training regimen, and should be taken in addition to a balanced diet and regular exercise routine.