This subliminal is unisex. This subliminal contains positive suggestions to flatten your chest. This subliminal works for anyone who wants to flatten the chest and get a male chest. ------- Binaural beat 4Hz This recording is designed to engage your conscious and subconscious mind to get the changes you desire faster. It is important to use headphones while listening to this recording because different messages are delivered to your left and right ears which will make your subconscious more receptive.