* Strength to support their own weight and perform complex swings and flips.
* Flexibility to contort their body in acrobatic poses.
* Balance to stay on the trapeze and control their movements.
* Endurance to perform multiple routines in a row.
* Agility to react quickly and adjust to unexpected situations.
Other circus performers who require great physical fitness include:
* Acrobats
* Aerialists
* Strongmen/Strongwomen
* High-wire walkers
* Jugglers (especially when juggling heavy objects)