Freedom Bulletin 319

Lactate has long been misunderstood as a metabolic by-product associated with hard, enduring exercise. We all have experienced the lactic burn, stopping us from training.

But lactate is a preferred brain fuel and signalling molecule, particularly under conditions of increased demand.

The brain weighs 2% of the body but consumes 20% of its energy. To function optimally, this disproportionate amount of energy requires the brain to be flexible in its fuel source.