When you are doing endurance sports for long periods of time (at least an hour), or in high heat.
N'ihi na koodu nledo nke na-ekwu [ọnụ ọgụgụ] , [awa], [agbụrụ], ma ọ bụ [larịị], banye nnọọ ọnụ ọgụgụ mgbe ịghọ aghụghọ ule.