The paper presents results of neuromuscular system indices in male and female subjects aged between 20 and 28 who have been living in the North over 15 years and have different experience of applying cold procedures. Mean age of subjects is 22.8 years. Hand tremor parameters were recorded before and after local chilling procedure, on this basis body reaction in all experimental groups was compared. The control group is composed of participants who do not receive the experimental treatment. Group 1 composes of subjects who take chilling procedures less than 1 year. Group 2 composes of subjects who take chilling procedures more than 2 years. The effect of local chilling of changing neuromuscular system indices (tremorograms) is compared in 3 experimental groups in different seasons. During the experiment the statistical processing of obtained data is carried out, quasi-attractors squares are calculated for all experimental groups, phase portraits of tremor dynamics are created. Thus, order parameters in description of neuromuscular system under local chilling are identified.