It's pretty odd that Usain Bolt ties granny knots. As a runner, I use reef knots and I double tie, also, because at my slow speed I don't want to have to waste

It's pretty odd that Usain Bolt ties granny knots. As a runner, I use reef knots and I double tie, also, because at my slow speed I don't want to have to waste time retying! He could run a couple of 100m sprints in the time it would take me to fix my laces. This may the only context in which my running can be compared with Bolt's!