Assessing the risk of acute kidney injury following exercise in the heat: Timing is important: Comment on: Chapman, C.L., Johnson, B.D., Vargas, N.T., Hostler, D, Parker, M.D., and Schlader, Z.J. Hyperthermia and dehydration during physical work in the heat both contribute to the risk of acute kidney injury, J Appl Physiol (1985), 2020. DOI: https://doi.org/10.1152/japplphysiol.00787.2019.