Yes U can become faster at tuning of u keep practicing and trying to go faster every time u run train every day try to go a little faster every single day have a schedule and eat healthy. This is coming from a. Funner that pass school record on track
Unfortunately plaque doesn't just come off. It isbthe literal calcification of Tartar, which means its become stone on your teeth. The only person capable of removing it is a dentist, so that is who I'd recommend seeing.
A habit because usually a habit is addictive