The main purpose of this research was to investigate the effect of weight loss on some physical fitness factors of wrestlers. So thirty wrestlers were voluntarily selected and randomly divided into two groups (n=15); active and sauna groups. They participated in some motor fitness factors tests such as; Sargent tests to measure the anaerobic acid-alkaline power, chest press for strength measurements, dynamic balance and coordination. We found that acute dehydration in the active group had a significant effect on strength, balance and coordination, but did not have a significant effect on strength. In sauna group, the effects of acute dehydration on strength and balance were significant but did not have a significant effect on strength.