What does exercise mean?
Exercise is activity involving physical effort, undertaken to maintain or improve health and fitness, but the word reaches well beyond the gym. It also denotes any task practiced to build a skill — a piano exercise, a grammar exercise — and, more formally, the act of putting a power or right into use, as in 'the exercise of judgment' or 'the exercise of free speech'. Derived from the Latin exercere, meaning to keep at work or train, the word carries connotations of deliberate effort and repetition rather than mere movement. It is neutral to positive in tone: exercise is broadly associated with discipline, self-improvement, and well-being, though phrases like 'an exercise in futility' can lend it ironic shades, describing effort that achieves nothing. Its versatility across physical, mental, legal, and ceremonial contexts makes it one of English's most adaptable everyday nouns.
Activity requiring physical effort, carried out especially to sustain or improve health and fitness.
"Swimming is excellent low-impact exercise."
A task or problem designed to practice or test a skill, or the use and application of a power, right, or faculty.
"Complete the exercises at the end of each chapter."
In this sense 'exercise' is countable and can be modified freely: 'a useful exercise', 'an academic exercise'.
To engage in physical activity in order to improve health and fitness; or to apply or put into action a power, right, quality, or skill.
"Doctors advise patients to exercise regularly and eat well."
The plural is used for individual drills or tasks ('grammar exercises'), for formal ceremonies ('graduation exercises'), and in the phrase 'take exercise' being uncountable when referring to general physical activity.
"The recruits completed their morning exercises on the parade ground."
The word 'exercise' comes from a Latin verb meaning to keep a workhorse busy — it has been putting us through our paces for over two thousand years.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of exercise
Exercise derives from the Latin exercere, meaning 'to drive out', 'to train', or 'to keep busy', formed from ex- ('out' or 'thoroughly') plus arcere ('to keep off, enclose'). The word entered Middle English via Old French exercice around the fourteenth century, initially carrying broad senses of training, employment, or application before narrowing toward its modern physical and practical meanings. Its long history of describing both bodily training and mental practice reflects the original Latin emphasis on disciplined, repeated activity rather than exertion alone.
Related word forms
How exercise is actually used
As a countable noun, 'an exercise' usually refers to a specific task or drill (a grammar exercise, a military exercise); as an uncountable noun, 'exercise' refers to general physical activity. In British English, 'do exercise' is common, while American English favors 'get exercise' or 'work out'. The figurative sense of applying a right or power is somewhat formal.
Easily confused with exercise
'Exorcise' means to drive out an evil spirit, while 'exercise' means physical activity or practice; the two are often mixed up in spelling.