Carl obtained his PhD at the University of Birmingham (2005-2008) under the supervision of Professor Asker Jeukendrup. His thesis focused on nutritional strategies to enhance performance and training adaptation in elite endurance athletes. These studies utilized stable isotope tracers to assess changes in substrate metabolism in response to diet and exercise interventions. He then completed postdoctoral training at the Copenhagen Muscle Research Centre (2008-2010) where he was mentored by Professor Gerrit van Hall. There he learned clinical methods such as arterial-venous blood sampling to get a better handle on tissue-level metabolic flux. He also continued to develop his interest and expertise in analytical mass spectrometry. Since postdoctoral training, Carl has held academic positions at Brunel University (Lecturer, 2010-2012), Loughborough University (Lecturer, 2012-2018; Senior Lecturer, 2018-2020) and Newcastle University (Senior Lecturer, 2020-2023). Carl joined the University of Birmingham as an Associate Professor in Sport and Exercise Nutrition in 2023.