If you are a beginner hunter, however, you may not be ready to train at Grand Central Station; you do not want the whole place to be a mess. If the surrounding noise makes it difficult for you to enjoy the familiarity, consider investing in headphones that remove noise. As your practice deepens, you will be better able to absorb sounds and other stimuli to a greater degree. You can choose to use sounds — any sound you know — as a basis for your actions, just as nature sounds above.