Let's break the word down first: freediving is diving “without a tank” — you rely the whole time on the single breath you took before entering the water. The biggest difference from scuba diving is not how deep you go, but whether you have a backup air supply.
Why does it sound cool but actually demand a lot of discipline? Because no tank means no fallback. How long you can stay underwater and how deep you can go depend on the few minutes of preparation before you enter the water and how relaxed you stay throughout. So the core training in this sport is not “holding your breath” but “not panicking.”
- It comes in several forms. Static apnea (STA) measures time in the water, dynamic disciplines measure horizontal distance in a pool, and depth disciplines measure depth on a line.
- Most people cannot hold their breath that long. For untrained healthy adults, static apnea in water is usually 30–60 seconds; the figures of several minutes online are results from systematically trained divers.
- Never hyperventilate before entering the water. Taking dozens of rapid, deep breaths in a row only tricks the body's urge to breathe; it does not add oxygen and instead raises the risk of shallow-water blackout.
- It has one iron rule. Whenever you hold your breath in water, a buddy with rescue skills must be present — the same applies in the shallow end of a pool or a bathtub — and the buddy must be able to lift you to the surface immediately.
In short: freediving is a skill that trades discipline for freedom, not a contest to show off. To get started, take a formal course with a certified instructor from AIDA, PADI, or SSI; do not teach yourself from short videos.