The gag reflex is something almost all of us have, and it feels pretty gross.
It can be caused both physically and psychologically – i.e. by having something stuck down your throat or by seeing something disgusting.
But there is a very simple trick that can get rid of it – and all you need is your left hand.
All you have to do is make a fist, with your thumb clenched inside your fingers.
And that's that! If you want to test it, then try putting the fingers on your right hand down your throat. You shouldn't gag – magic!
There is no real scientific evidence as to why this works, it is mostly anecdotal, but it may just be that the pressure is simply distracting enough to stop you from gagging.
It works to different degrees for different people, but people claiming to be dentists on this Reddit thread say it is effective enough that they ask some of their patients to try it.