A solid metric to know, considering its influence on race performance. Many coaches argue that lactate threshold is one of, if not the, biggest performance predictor. It determines how fast you can ...

When George Brooks first began investigating lactate, or lactic acid, sports physiologists saw it as a muscle poison that lowered performance. His research over decades has reversed that picture, ...

Conventional wisdom has long held that lactic acid is a metabolic scourge, bringing hard exercise stints to a screeching halt and causing next-day soreness. Recent research shows how wrong that rap is ...

For as long as I’ve been running – and I recently passed the four-decade mark – I’ve been practising certain key principles of our sport. Run long to develop endurance. Run fast to build speed. Take ...