Nature instinctively forces them to extend their arms laterally and press down on the water’s surface. Pressing down on the surface of the water permits drowning people to leverage their bodies so they can lift their mouths out of the water to breathe.

3. Drowning people cannot wave for help

“Except in rare circumstances, drowning people are physiologically unable to call out for help. The respiratory system was designed for breathing. Speech is the secondary or overlaid function. Breathing must be fulfilled before speech occurs.

1. It‘s physiologically hard to call out for help

The Instinctive Drowning Response—so named by Francesco A. Pia, Ph.D., is what people do to avoid actual or perceived suffocation in the water. And it does not look like most people expect.There is very little splashing, no waving, and no yelling or calls for help of any kind. Here's what it looks like:

The Instinctive Drowning Response

Physiologically, drowning people who are struggling on the surface of the water cannot stop drowning and perform voluntary movements such as waving for help, moving toward a rescuer, or reaching out for a piece of rescue equipment.

4. Drowning people cannot voluntarily control their arms

From beginning to end of the Instinctive Drowning Response people’s bodies remain upright in the water, with no evidence of a supporting kick. Unless rescued by a trained lifeguard, these drowning people can only struggle on the surface of the water from 20 to 60 seconds before submersion occurs.

5. People’s bodies remain upright in the water

The mouths of drowning people are not above the surface of the water long enough for them to exhale, inhale, and call out for help. When the drowning people’s mouths are above the surface, they exhale and inhale quickly as their mouths start to sink below the surface of the water.

2. Mouths alternately sink below the surface and reappear

<ul><li>Head low in the water, mouth at water level</li><li>Head tilted back with mouth open</li><li>Eyes glassy and empty, unable to focus</li><li>Eyes closed</li><li>Hair over forehead or eyes</li><li>Not using legs—vertical</li><li>Hyperventilating or gasping</li><li>Trying to swim in a particular direction but not making headway</li><li>Trying to roll over on the back</li><li>Appear to be climbing an invisible ladder</li></ul>

Other signs of drowning when people are in water

The new captain jumped from the deck, fully dressed, and sprinted through the water. A former lifeguard, he kept his eyes on his victim as he headed...

1. It‘s physiologically hard to call out for help

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