It
is
very
important
to
do
exercise
____________________
.
Exercise
makes
our
____________________
stronger
and
it
also
helps
our
____________________
and
____________________
systems
.
When
we
exercise
,
we
____________________
faster
and
our
heart
has
to
work
harder
to
pump
____________________
around
the
body
.
As
a
result
,
our
____________________
gets
stronger
.
The
____________________
that
we
use
breathe
in
and
out
also
get
stronger
.
