Cardiovascular Progression#

[DRAFT OUTLINE — Claude]

Planned coverage:

• Intensity distribution - the case for polarised training
• Building the base before building the top
• Zones - what they actually measure and how to set them honestly
• Threshold work - what it moves and what it does not
• Progressing volume without progressing injury
• Economy as a trainable quality separate from fitness
• Detraining - what fades first and how fast