3...2...1...start!
Plus size asian man bending over to touch hurting knee
Front view of a teen girl in sportswear bending knees
Side view of a teen girl in sportswear bending knees and raising hands
Three-quarter view of a teen girl in sportswear outspreading hands and bending knee
Three-quarter view of a teen girl bending knees and gesticulating
Front view of a laughing businesswoman bending knees and looking up
Three-quarter view of a teen girl in sportswear outspreading hands and bending knees
Front view of a teen girl in sportswear putting hands on hips and bending knees
Three-quarter view of a teen girl in sportswear outspreading hands and bending knees
Three-quarter view of a teen girl in sportswear outspreading hands and bending knees
Full-length a female athlete squats checking her fitness-tracker
Young woman sitting on chair and using smartphone
Young woman sitting on chair and using smartphone
Young woman sitting on chair and using smartphone
Young woman leaning her head on knees while sitting on chair
Portrait of withdrawn female athlete looking down sitting on all her fours
Front view of a teen girl in sportswear bending knees
Three-quarter view of a teen girl in sportswear bending knees and raising hand
Knee hug yoga pose
Front view of a teen girl bending knees and gesticulating
Three-quarter view of a teen girl bending knees and gesticulating
Three-quarter view of a teen girl in sportswear outspreading hands and bending knees
Front view of a teen girl in sportswear putting hands on hips and bending knees
Front view of a teen girl in sportswear putting hands on hips and bending knees
Three-quarter view of a teen girl in sportswear bending knee and looking at camera
Female athlete squatting looking at camera
Young woman sitting on chair and using smartphone
Young woman sitting on chair and using smartphone
Young woman sitting on chair and using smartphone