Since singing requires a person to think, it means that the person doing it has to use their brain. Whenever you are singing, you have to follow along the rhythm, melody and lyrics to the song. In addition, the emotions from the song you may be singing also connect you to the act. Performing karaoke stimulates your brain because it raises the bar on all of those things you normally do when singing alone or to yourself. It also causes activity in the neurons of your brain. These are the neurons that bring together emotional, physical and psychological activity.
One of the greatest benefits to singing karaoke is the amount of stress it releases. Since singing usually makes people happy, the level of stress in your body is automatically decreased. At the same time, endorphins are released and they help reduce both anxiety and stress. Singing along to a tune you love will also slow your heart rate and let you breath properly.
When someone has to sing karaoke, they usually have to use their whole body. In turn, this forces us to breath better and with more ease. The muscles from your diaphragm and lungs become fully expanded. In addition, you also cause your abdominal muscles to be more relaxed. That results in better breathing.
Singing along to a song requires you to use the memory part of your brain. Even though the lyrics may be in front of you, you will automatically access the memories you have in your brain about the song. The other parts of the brain that are stimulated from singing are the learning and concentration part. All of them help with your memory.