It is important to practice regularly. I am learning French. I am not outstanding but not terrible either. I made a big mistake in not practicing regularly. I lost a lot of knowledge. I don't want the same thing to happen to others. I inform you to practice and desire you to keep learning. I don't know who you are but I still tell you to practice regularly.
This is definitely the good side of the streak feature - it's a fantastic way to get those competitive types into practicing their words every day!