Can you overuse aligner "chewies"?

I recently started Invisalign and when I received my first set of trays, I was also given a few plastic sticks called chewies. My dentist told me I should use them an hour a day so that my aligner fit snug and also to stimulate the bone and tissue. I used to be a gum chewer and so I enjoy biting on my chewies throughout the day, maybe for 3 hours total. My question is, can you overuse chewies? Will chewing them often have a negative effect?