It is a life style, a relationship. No not everyone has to raise his or her hands. And no, not everyone is going to fall on his or her face, prostrate before an Almighty God. And believe me, not all of you can sing like David to the Lord. But worship is personal.
Most relationships are.
They need to be nurtured in special ways until they become mature. If the spirit is present and you truly feel it sing out. If you have been moved to the depth of your heart, lift those hands. When you pray at home or in your prayer closet and you are in awe of God's presence, fall on your face and know He is God. Lift those eyes towards heaven and look at the God who created and saved you.