Objective: to study the reaction of the cerebral vessels to physical exercise. Materials and methods: dynamic observations of 300 students of the Ural State Law Academy. The duration of the experiment was 2 years, every year consisted of 9 months (a school year). The trial included 75 participants who were divided into three groups with 25 students in the each group: hypotensive, hypertensive and normotensive students. The average age of participants was 17-18 years old. The reaction of cerebral vessels to the physical exercise was registered using Doppler ultrasound (contraction or expansion of the cerebral vessels during power loading). The study involved only those students who have passed a medical examination. Results: the influence of the physical exercise (power loading) on the state of cerebral vessels allowed to rank them according to the state of health of the students. It was determined that the exercises with a large amplitude motions and strong physical stress, as well as exercise associated with turning, flexion and other oscillatory movements of the head caused a negative reaction of the cerebral vessels, especially in hypotensive patients. Respectively, in hypertensive patients such reaction occurred in response to the exercise with a strong physical stress and low amplitude movements. Conclusion: for the individualization of physical training for persons suffering from cerebral vascular disorders it is necessary to separate the hyper- and hypotensive patients by type of cerebral vascular reactions. Early diagnosis of the individual degree of exercise tolerance defined in terms of cerebral circulation will allow to avoid hyper functioning of the body.