One of the great benefits of Invisalign is the lack of restrictions they will impose on your life. Because you can remove your aligners when eating and drinking, there is no limitation on foods and drinks. This is the opposite of metal braces, which have a lengthy list of restrictions due to the metal brackets and wires traditional braces comprise. You must always put your aligners back on as soon as possible after eating or drinking to ensure that you wear them for 20 to 22 hours a day. Failure to comply with this requirement can have a negative impact on your treatment.