Is It Ok To Workout On An Empty Stomach ?

I am used to exercise with empty stomach after waking up in the morning because that makes me feel more energetic. Is this OK to workout with empty stomach in every time of the day or should i have to take some nutrients before i go to the gym.
I am used to exercise with empty stomach after waking up in the morning because that makes me feel more energetic. Is this OK to workout with empty stomach in every time of the day or should i have to take some nutrients before i go to the gym.