First, at the Athens Olympic Games, Bolt participated in the first Olympic Games in his life for the first time, but unfortunately, due to overtraining, he still pulled his leg and injured his achilles tendon in later training. As you can imagine, Bolt was out early. At the subsequent World Championships in Helsinki in 2005, Bolt failed to achieve good results because of a slight tear in his leg muscles. Media reports of public opinion swarmed in, leaving Bolt in trouble. Bolt adjusted himself and proved himself in later competitions.
Second, Bolt's family was poor when he was a child, and his father was heavily in debt in business. Bolt was lazy when he entered the sports school, and didn't like training, but his mother later asked him, saved a few months' money to buy a pair of shoes and knitted a red heart with stitches. Bolt's mother told him that the bread here contains my love for you. Great maternal love made Bolt wake up and began to train seriously.
It can be seen that Bolt's sprint career is not very smooth.