Vaastu/ Vastu is directly related to these five elements
which are as follows:-
Prithvi (Earth)
Jal (Water)
Agni (Fire)
Vayu (Air)
Aakash (Space)
When these five elements are in harmony in our body, we are healthy and active and when their equilibrium is disturbed one is devitalized or unhealthy. Same is true with our place of living or work.