ENThe questionnaire studies between 1995–2000 were conducted in varied environmental of Polish and national schools in Ukraine (Lviv and Ivanofrankovsk), Beylorussia (Grodno, Minsk) and Lithuania (Vilnius). The questionnaire was based on international questionnaire form „Health Behaviour in School – aged Children” modified by Woynarowska and co-operators [5]. The latter was used during parallel studies of Polish children and youth. 324 boys and 391 girls aged 15-17 responded for the questions. Key words: Health behaviours, health self-evaluation and physical dexterity, subjective ailments.