Dr Carl Langan-Evans is a research scientist for the Science in Sport Performance Solutions team and a post-doctoral research fellow at Liverpool John Moores University. Dr Langan-Evans completed his PhD in applied sport physiology and nutrition with a mixed method approach undertaking qualitative, quantitative, laboratory and field based investigations examining the effects of weight making strategies on energy availability and relative energy deficiency in sport (RED-S) among combat athletes. Dr Langan-Evans has published research articles, invited reviews, consensus statements and authored a book chapter, in the fields of applied sports nutrition, physiology and strength & conditioning. Alongside his academic roles, Dr Langan-Evans is a practitioner member of the Sport & Exercise Nutrition Register (SENr) and United Kingdom Strength & Conditioning Association (UKSCA), whilst consulting with a number of professional and Olympic combat sports athletes inclusive of those in the UFC, Bellator, Cage Warriors mixed martial arts and boxing promotions.