He asked people to find a pair of twin brothers who were about to be executed and told them to give them a chance to be born again, but they had to be the subjects of his "living experiment" voluntarily.
In order to survive, the two brothers were forced to agree.
So Gustav III calmly told them the content of the experiment: At that time, people had many rumors about tea and coffee. Some people think that tea and coffee will kill people, so the curious king asked someone to do an experiment, so that one person only drank tea and the other only drank coffee.
After years of experiments, the coffee drinker finally died at the age of 83, while the other person lived longer.
However, it is unknown whether Gustav III saw his experimental results with his own eyes, because Gustav III was born in1746,65438+1October 24th and died in 1792 at the age of 46.