Ключевые слова: 40 years, 40s, activity, adult, alps, austria, bicycle, brother, caucasian, child, cyclist, daughter, family, father, female, forest, four, grass, group, happy, healthy lifestyle, helmet, landscape, male, man, meadow, mid adult, mother, mountain, mountain bike, mtb, nature, outdoors, parents, positive, sister, son, sports, summer, tannheimer tal, teenager, together, two children, vilsalpsee, wilderness, woman,