hyperextension

• (exercise): hyper (colloquial)

hyper- +‎ extension

hyperextension (countable and uncountable, plural hyperextensions)

1. The extension of a joint beyond its normal range; the condition of being hyperextended.
2. An exercise performed by lying on the stomach, ideally inclined upwards as on a Roman chair to reach a higher range of motion, and raising and lowering the upper torso.

• reverse hyperextension

• hyperextensor