Hot weather combined with a lack of enough fluid in the body to carry on normal body functions can lead to dehydration. It is important to drink plenty of water during physical activity to maintain optimal energy levels and to prevent dehydration.
Review Date 8/13/2020
Updated by: Linda J. Vorvick, MD, Clinical Associate Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.