What basic action can help avoid GLOC?

Using proper breathing techniques is essential in preventing GLOC (G-induced Loss Of Consciousness), as it helps to manage the body's oxygen levels and maintain blood flow to the brain. During high G-force maneuvers, the body's natural response can lead to a decrease in blood flow to the head, which may result in loss of consciousness. By utilizing techniques such as diaphragmatic breathing, pilots can stabilize their blood pressure and facilitate better distribution of oxygenated blood, thus reducing the likelihood of experiencing GLOC.

While other actions, such as reducing speed or adjusting control surfaces, can influence the magnitude of G-forces experienced, they do not directly address the physiological responses that can lead to GLOC. Increasing altitude, on the other hand, does not contribute to preventing GLOC either, as it primarily alters air pressure and does not influence the body's oxygen consumption or blood flow during G maneuvers. Therefore, focusing on breathing techniques is a proactive measure to maintain cognitive function and bodily control in high-G situations.