I know that with all the things you've got going on this holiday season, the last thing you need is another person to add to your gift recipient list. However, don't forget to tip your personal trainer. If you have no idea what to give, a good rule of thumb is to give the value of one session with him or her. If that seems a bit much, then try to come up with something more personal or homemade. In the end it's the thought that counts, but it is a good idea to turn those thoughts into something a little more tangible.