In March, I asked on social networks what was the most difficult for people during the COVID-19 pandemic. I got more than 100 answers and found that in many ways people have the same problem: the unknown.

Tensions became a common feature in the 21st century, causing a mental health crisis, and science suggests that it affected unborn babies. In contrast, psychologists are keen to teach us that there is some kind of good, healthy and even fruitful tension.

When we are frustrated or stressed, we are eager to eat chocolate to modify our mood. But the truth is that the feeling of chocolate is short-lived, making us worse off than before.