Jamaican Usain Bolt admits years of sprinting starting to take toll
Jamaican champion, who is looking forward to break, says staying injury-free is the goal
"I remember going to my doctor and he told me I had to pay close attention to my back. I know I have to be more focused on staying in shape," the 27-year old said after the last Diamond League meeting of the year.
"The older you get the harder it is to come back from injury. I gotta stay injury-free during the season, that's the main factor," added Bolt who was dogged by a hamstring problem earlier this year.
The world record holder once again defeated his rivals over 100 metres in Brussels, but performed fewer of his trademark theatrics and, after overcoming a slow start to win in 9.80 seconds, conceded he was getting tired.
"I've been smiling ever since I came to the stadium because I knew it was the last one of the season. I'm just happy to be done and looking forward to going home to see my friends and extended family, and just to chill out," said Bolt, who will take a few weeks of holiday before beginning his training again in mid-October.
"It's the end of the season. I've got no worries. I'm totally relaxed now, I'll have some fun and put my feet up."