When a person is doing workouts regularly, then they need much energy to do all kinds of workouts. Daily work outs either moving to gym or performing them in home itself have numerous benefits.
Whether you want to keep out the noises or just listen to your favourite music while sleeping, the headphones are good choice for you.
Yes, the noise cancelling headphones can be used without music too. Over the past few decades, the technology has come quite a long way, especially for personal listening devices such as headphones.