Cheerful self determined young woman with curvy body and hair knot exercising indoors on yoga mat strengthening muscles, keeping both hands and knee on floor, raising one leg and smiling joyfully Smiling people doing mermaid pose at yoga class. Men and woman stretching legs in gym. Yoga class concept. Happy senior people doing yoga by stretching hands – Concept of Senior people fitness and healthy lifestyle – two elderly man busy in morning exercise Trainer assisting group of people with pashimottanasana exercise in fitness studio Physical therapist assisting young caucasian woman with exercise during rehabilitation in the gym at hospital. Female physiotherapist training a patient in physiotherapy center.