Self-report Versus Direct-Measurement for Assessment of Fluid Intake During a 70.3-mile Triathlon An American group has studied how exactly triathlets can estimate their supply of fluid on the running track of half a Ironman triathlon. Compared with a precisely measured intake, the self-assessment was not bad, with certain individuals clearly laying down. The work can be found under https://pubmed.ncbi.nlm.nih.gov/25561580/