The United Nations’ world health organization has made new rules on age:
Young persons under 44 years of age;
Middle aged between 45 and 59.
Young senior aged 60 to 74;
Aged 75 to 89 are elderly;
People over 90 years old are long-lived.
I spent the first year of my middle age carefully. This year I bought an electric piano, so from now on I can wear headphones to practice; This year, I bought a set of books, black swan series, and I now read the second book – antifragile; This year, my back pain worsened and I became fond of lying in bed. I wish I were 45 forever and never get old. Keep encouraging myself, come on, take exercise, and lay a good foundation for my old age.