Whether you're looking to impress your partner, justify an extra £10 on your day rate, or simply become a better human being, this educational video is what you're looking for. Welcome to your new super-power.
I picked this trick up from a recent innovation course. The instructor rattled it off nonchalantly during an activity introduction, seemingly without realising that it is the single greatest quality-of-life improvement for office workers since the invention of headphones.
And now you can be a hero too.