Answer:
What starts with a 'T', ends with a 'T', and has T in it?
What has thirteen hearts But no body or soul?
Who is that with a neck and no head, two arms and no hands? What is it?
It regulates our daily movements, but it feels no interest in our lives. It directs us when to come and go, but does not care if we pay attention. What is it?
The person who makes it has no need for it. The person who purchases it does not use it. The person who does use it does not know he or she is. What is it?
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.