This can make you feel tired by Christine Burgmer | Oct 31, 2014 | Allgemein | 0 comments In this 59-second YouTube video, Richard Wiseman (psychologist, author and magician) talks about yawning. Are you already feeling a bit tired? share share Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of followup comments via e-mail. You can also subscribe without commenting.