What does caffeine do to our bodies?

Sweet, caffeinated energy drinks are in the headlines again as the UK Government says it wants to ban under 16s from buying them. Some can contain the equivalent caffeine as 2 to 4 espressos. James Betts, Professor of Metabolic Physiology at the University of Bath, explains the science behind how caffeine affects the bodies of adults and children. Earthquake scientist Dr Judith Hubbard from…