The article presents data on the features of functional reserves, the level of biological adaptation, mental
performance of students by the profession driller. We found that more than half of the adolescents had
reduced adaptive reserves of varying severity. Thus, the level of functional reserves, which was reduced
relative to the physiological norm, was noted in 89 % of the 1st year, 83.4 % in the 2nd year and 93.3 %
in the 3rd year students. In parallel, there was the growth trend to the 3rd year of study from the
students number with reduced performance (from 27.6 % to 33.3 %) and an increase by 1.6 times of the
students number with a significantly reduced level of performance.