K
Kirabo
Guest
i don't know my electronic 100m time but it ranges from 12.1 to 12.3. I'm a 13 year old track sprinter trying get my times down to improve my overall speed so it translates into different sports i want to find something besides sprints and other forms of track running cuz of i have daily track practice? Can anybody give me tips and exercise that could shave maybe up to 4/10's of a second off