Home

Fit

Fit is a versatile term with several related meanings in everyday language, science, and industry. As an adjective, it commonly denotes physical health or conditioning: a person who is fit is in good shape. It also means suitable or appropriate for a particular purpose or circumstance, such as a device that is fit for use or clothing that is the right fit for someone. The verb form to fit means to be the right size or shape for something, or to join parts so that they match or function together.

In everyday usage, fitness emphasizes physical activity, nutrition, and lifestyle factors that influence health and performance.

In scientific contexts, fit describes how closely a model or theory aligns with observed data. A statistical

Other uses of fit include social and functional compatibility, as in “fit in” with a group or

Fitness
is
often
described
in
terms
of
attributes
such
as
strength,
endurance,
flexibility,
body
composition,
and
cardiovascular
health.
Fitness
training,
assessment,
and
related
services
make
up
a
major
industry
and
public
health
focus
in
many
regions.
model
is
said
to
fit
the
data
well
if
its
predictions
correspond
to
the
measurements.
The
term
is
paired
with
phrases
like
goodness
of
fit
and
fit
statistics.
In
biology,
fitness
refers
to
the
reproductive
success
of
organisms
and
their
contribution
to
future
generations,
a
central
concept
in
evolutionary
theory.
“fit”
of
components
within
a
system.
The
phrase
“a
fit”
can
also
denote
a
temporary
episode,
such
as
a
fit
of
anger,
coughing,
or
a
seizure,
depending
on
context.
Clothing
and
fashion
settings
use
fit
to
describe
how
garments
conform
to
the
body.