Among the most dangerous is the withholding of water during training sessions. Water balance must be maintained in exercising bodies and dehydration prevented. The deprivation of water leads to quick dehydration and impairment of athletic performance. Heavy sweating requires water replacement by allowing free access to water before, during, and after an activity. Taking in small, frequent amounts of water is effective for maintaining fluid balance.
Dehydration can occur even in cold weather.
The blood volume is lessened, making warming of the extremities difficult. Withholding water from athletes is not justified by exercise science. Remember to train smart where water consumption is concerned. Make sure the trainers and coaches who are involved with you or your family members encourage water replacement.