We should not be standing when praying to God. In a passive or horizontal posture.
The Acts 20:36 And when he had thus spoken, he kneeled down, and prayed with them all.
St. Matthew 26:39 And he went a little farther, and fell on his face, and prayed, saying, O my Father, if it be possible, let this cup pass from me: nevertheless not as I will, but as thou wilt.
Jesus kneels down in a horizontal posture. Jesus himself demonstrated the right way to pray. Kneeling down to pray means you are showing respect to God. Kneeling down means folding our kneel in a horizontal posture.
St. Matthew 6:7 But when ye pray, use not vain repetitions, as the heathen do: for they think that they shall be heard for their much speaking.
It is a lack of respect for God when a man prays to have his head covered. Women should cover their heads when praying. When a woman uncovers her head, she dishonored her head.