There’s no one-size-fits-all answer, but for most people, I recommend adding 1–2 dedicated core workouts to your week.
Remember, your core is involved in almost every movement you do. If you’re following a well-rounded strength program and focusing on good form, you’re already training your core through exercises like squats, deadlifts, carries, presses, and planks. That’s why you don’t need to do core-specific workouts every day.
Think of these workouts as a way to add a little extra challenge, build strength, and improve stability. Sprinkle them into your week whenever it feels right, either at the end of a strength workout or as a quick standalone session.