Performing a track workout, such as 4 x (400m hard + 400m easy) may seem like common sense for most runners, but we all started from scratch at some point without any knowledge on what the heck 4x400m/400m actually is!
Performing a track workout, such as 4 x (400m hard + 400m easy) may seem like common sense for most runners, but we all started from scratch at some point without any knowledge on what the heck 4x400m/400m actually is!