Calories
 
Calories
 
are
 
a
measure
 
of
how much
energy
 
 
is
in
food.
 
When
 
we
eat,
we
gain
calories
 
 
and
 
it
gives
us
energy
 
to
run around
 
and
do
 
stuff.
 
 
If
we
eat
more
calories
 
than
we
use
 
moving
around,
 
then
our
body
 
stores
 
up
 
the
calories
in
fat.
 
 
If
we
use
more
calories
 
than
we
eat,
 
then
our
body
will
start
 
to
burn up
fat
 
 
that
 
was
stored
earlier.