Answer by Owen Reynolds

If you're just starting Unity, maybe skip coroutines completely for now. The best way to do something is a way that makes sense to you. See if this seems more obvious, counting time down to 0, then resetting: public float secsToNext=0.0f; // public lets you check it running in the Inspector Update() { secsToNext -= Time.deltaTime; // T.dt is secs since last update if(secsToNext