Functional Training & Metabolic Conditioning

"Few terms in fitness are used more — or defined less — than 'functional training' and 'metabolic conditioning.' One conjures wobble boards and athletic-looking exercises; the other, gasping circuits and 'afterburn.' Both contain real, valuable ideas buried under marketing. This book digs them out: 'functional' means training that transfers to what you actually want to do, and 'metabolic conditioning' means deliberately training your energy systems and work capacity. Defined honestly and applied with evidence, both are powerful — and stripped of hype, both are simpler than they're sold."

"Functional training" and "metcon" are everywhere — in classes, gyms, apps, and marketing — and surrounded by claims that range from sound to nonsense. Whether you train for general fitness, athletic work capacity, or coach others, you need rigorous definitions and the honest evidence: what actually transfers, what conditioning actually trains, and which of the popular claims (instability gadgets, the "afterburn," HIIT-for-fat-loss) hold up. This chapter sets that frame.