Jonge tiener kickboxer vechter training op het dak met gebouwen op de achtergrond, stedelijke krijger - Stockfoto’s en -afbeeldingen

Young teenage kickboxer fighter training on the roof with buildings in background, urban warrior

Teenage boy engaged in the gym hall

A teenage boy engaged in sport, looking at camera while holding dumbbells. Isolated on red background. Training, fitness, active lifestyle concept. Horizontal shot

Young teenage kickboxer fighter training on the roof with buildings in background, urban warrior

Man stretching outdoors in city

Young athlete runner sprinting on the stadium track

Boy fighter training on roof with buildings in blurred background

Long distance runner stretching and warming up before a run

Long distance runner stretching and warming up before a run

Ultra distance marathon runner training

Young athlete runner, sprinting on the stadium track

Boxer with wrapped hands training with weights in gym

Two friends running on the lines at the stadium in a sunny day

Long distance runner stretching and warming up before a run

Boxer with wrapped hands training with weights in gym

Muay Thai fighter training with shadow boxing by strong waterfall

Long distance runner stretching and warming up before a run

Mature athletic man running isolated on white background

Boxer with wrapped hands training with weights in gym

Teenager training with weights isolated on white background