Hello
Many people pay too little attention to choosing a toothbrush, guided only by appearance or price. However, knowing how to choose a toothbrush will allow you to get a tool for thoroughly cleaning your mouth, maintaining healthy teeth and gums. The site has a lot of useful information about toothbrushes, how to choose one for your teeth and so on, take care of your health!
You need to get a life
Is this what you do in your spare time?
It depends on what you mean by life cycle. Toothbrushes do start to break down and become less effective overtime. Because of this it is recomended to replace your toothbrush every month of so.