The balance beam is an artistic gymnastics

Artistic gymnastics

Artistic gymnastics is a discipline of gymnastics where gymnasts perform short routines on different apparatus, with less time for vaulting . The sport is governed by the Federation Internationale de Gymnastique , which designs the Code of Points and regulates all aspects of international elite...

 apparatus, as well as the event performed using the apparatus. Both the apparatus and the event are sometimes referred to as simply "beam". The English abbreviation for the event in gymnastics scoring is BB.

The beam is a long, narrow beam

Beam (structure)

A beam is a horizontal structural element that is capable of withstanding load primarily by resisting bending. The bending force induced into the material of the beam as a result of the external loads, own weight, span and external reactions to these loads is called a bending moment.- Overview...

 which is typically raised from the floor on a leg or stand at both ends. The balance beam is only performed by female

Female

Female is the sex of an organism, or a part of an organism, which produces non-mobile ova .- Defining characteristics :The ova are defined as the larger gametes in a heterogamous reproduction system, while the smaller, usually motile gamete, the spermatozoon, is produced by the male...

 gymnasts; male

Male

Male refers to the biological sex of an organism, or part of an organism, which produces small mobile gametes, called spermatozoa. Each spermatozoon can fuse with a larger female gamete or ovum, in the process of fertilization...

 gymnasts do not compete on beam.