Usain Bolt, the world's fastest man, targets his usual fast times, staying fit and repeat as World Championships sprint double king in 2015.
The two-time Olympic Games sprint double champion said, "New Year, Same Mission, Same Goals #workneverstop#ForeverFaster #2015"
Bolt won the 100m and 200m at the Moscow World Championships in 2013. The year before he repeated his Olympic Games 100/200 success from Beijing in London.
