Young gymnast using training wrist straps to aid practise on bars

Thermal image of male athlete training on exercise machine. Image shows the heat produced by the muscles during training

Thermal image of young male athlete training with barbell. The image shows the heat produced by the muscles

Thermal image of young male athlete training with weights. The image shows the heat produced by the muscles

Thermal image of an athlete training with weights. The image shows the heat produced by the muscles

Gymnast swinging from rings

Man doing Yoga exercises

Human growth hormone molecule

Inosine nucleoside molecule, illustration

"Inosine nucleoside molecule. Found in tRNA. Used as fitness nutritional supplement. Atoms are represented as spheres with conventional colour coding: hydrogen (white), carbon (black), oxygen (red), nitrogen (blue). "

Blonde woman with small handles

Front view thermal image of young man training with barbells. The image shows the heat produced by the muscles

A person using a calculator

A gymnast balancing on still rings

Two men talking to each other while using their computers

Businessman performing gymnastics

Businessman balancing on rings

Businessman performing gymnastics on a briefcase

A flying saucer using wormhole technology to travel to a distant world.

Acrobats performing in circus

Antique Anatomical Illustration (black and red engraving) showing skeleton in right profile in the pose of the Borghese Gladiator., 1812

Acrobats performing in circus

Illustration demonstrating the proper technique for reading blood pressure levels when using a manometer. The top image illustrates the proper technique with eye level equal with meniscus level. The bottom two images show how improper eye level will res

A paper cut illustration of a girl using an asthma inhaler

Athlete using gymnastic rings, illustration