Breath-holding techniques involve methods used to extend the duration a person can hold their breath. These techniques are often practiced in activities like free diving and swimming, where breath control is essential. They can also be beneficial for relaxation and meditation, helping to improve lung capacity and overall respiratory health. Common methods include diaphragmatic breathing, where one breathes deeply using the diaphragm, and CO2 tolerance training, which gradually increases the body's ability to handle carbon dioxide buildup. Practicing these techniques can enhance physical performance and promote a sense of calm and focus.