Anything that takes your focus off the track and surroundings is a bad thing. That's one of those things that is hard to make sense of until you've done it. You will have many concerns going in that will prove to be no issue, and other things that never entered your mind that will prove to be an area of concentration. While that may sound ominous as an answer, causing you to re-think any involvement at all, don't worry about it. It's also true that most riders finish their first track day/school with a sense of how fun and calm it is out there with their initial concerns of it being a fearful experience completely alleviated. They have fun! Starting from any level, you'll go faster than you ever have and yet feel safer than you ever have on the street. It's really a good time with most of the fears purged after the first few laps. You'll wonder why you waited so long to do it.
BTW, you'll gauge your speed more with gear selection and RPM.
Keeping the "Hap" in "Happy Holidays"!
Regime change begins at home.
Blind patriotism is worse than no patriotism.