Boxer training hard with the punch bag

Boxer training with speed punching bag

An athlete doing gymnastics exercises

An athlete doing jumping exercises

Athlete training with a barbell

Footballer preparing his uniform

American football player prepares his uniform by placing his shoulder pads inside his team shirt.

American footballer warming up on a field

Football player warming up moving his arms in circles in a football court on a sunny day.

Bodybuilder exercising his biceps in the gym

Man doing push-ups in the gym

Athlete running in the treadmill

Athletic man hits boxing dummy with right hook

A fit woman cleans the sweat of her forehead while training

A young fit woman cleans the sweat of her forehead signs of determined effort as she vigorously trains on the stationary bike over a black background.

A woman's face shows signs of effort while training on the stationary bike

A woman's face bears the unmistakable signs of determined effort as she vigorously trains on the stationary bike over a black background.

Gymnast girl doing somersaults with great skill

Skillful young gymnast of great talent, doing complicated pirouettes in a dark gym with a light from a searchlight.

Complex somersaults of an agile gymnast

Complex pirouettes of an agile young gymnast practicing in a dark gymnasium in a bright pink leotard, under the bright light of a spotlight.

Artistic performance of a young gymnast

Artistic performance of a young female gymnast in a leotard, dancing in a gymnastics gym under the bright light of a spotlight.

Artistic choreography of a gymnast girl

Skillful and talented young gymnast in a shiny leotard doing an artistic dance in a dark and empty gymnasium.

Skillful young gymnast doing a difficult acrobatics

Experienced young gymnast dressed in a leotard while doing a complex acrobatics on a balance beam with great skill.

Gymnast in a leotard stretching on a balance beam

Close up shot of a gymnast stretching her body on a balance beam in a dark, empty gym, dressed in a leotard and bun.

Rowing competitor in his kayak

Athletic woman performs traction deadlift at gym

An athlete is rubbing magnesium on the hands

Two athletes racing a long a track share a high five

Tennis player bounces tennis ball before serving