This topic follows on well from Zane’s post on training smart vs. training hard. As a sprint coach, you are often branded. Are you a short to long guy, long to short guy, high low guy… the tempo guy? In the world of speed development for short sprinters, Charlie Francis is often cited as being responsible for a great deal of coaches’ training philosophy. He popularised the idea that sprint training should be polarised and sit in one of two boxes: >94% or <76% intensity. As su