I did it about 10 years ago and was quite confident I could do it. It didn`t work out and I couldn`t taste anything for about an hour or two. The higher the quality the cinnamon, the harder it is to do.
If you want to succeed, here are a few ways you can do so. You need to start by adding moisture to your cinnamon. Take the tablespoon of Cinnamon and put it in a small bowl. Cover the bowl with a hot, damp cloth for around 30 minutes.
Before taking the Cinnamon, try and get as much saliva in your mouth as you can possibly hold. The more the better and the idea here is for the Cinnamon to absorb it so it will go down easier.
Do these things, film it, and you will have a million views on Youtube as you will be one of the few to actually complete it successfully.
