The “best time” is the time that helps you meet your daily protein target with the least friction. Contrary to popular myths, there is no single universal anabolic window that determines results for everyone. If you train, taking protein within 1–2 hours after a workout can be practical because it is easy to execute and supports recovery routines. But protein can also be useful earlier in the day—especially if breakfast is low in protein or you tend to snack due to hunger swings. The main priority is total daily protein and distributing it across meals in a sustainable way. Late-night shakes may cause reflux or bloating in some individuals, so personal tolerance matters. For non-exercisers, timing is even less critical; the purpose is simply to cover a dietary gap. In short: the best time is when you can consistently do it and it supports your overall plan.