unix while loop

while true
do
echo Filesystem           Size  Used Avail Use% Mounted on
  df -Ph | grep home
  sleep 4
df -k | grep home
done


=====================================
output 


Filesystem Size Used Avail Use% Mounted on
/dev/mapper/cl-home   96G   42G   55G  44% /home
/dev/mapper/cl-home 100298908 43191548  57107360  44% /home
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/cl-home   96G   42G   55G  44% /home
/dev/mapper/cl-home 100298908 43191552  57107356  44% /home
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/cl-home   96G   42G   55G  44% /home
/dev/mapper/cl-home 100298908 43191552  57107356  44% /home