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The Best Fitness Documentaries on Netflix

The best fitness documentaries on Netflix span elite track training, Simone Biles’s comeback, freediving, influencer culture, weight-loss television and gut-health well-being.
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SPRINT is the best first fitness documentary to try on Netflix if you want elite training and competition pressure. The full list goes beyond the gym, covering athlete comebacks, endurance risk, fitness-influencer culture, weight-loss television and well-being.

These are documentaries about training, athletic performance, fitness culture and well-being—not follow-along workout videos. The strongest starting point is SPRINT, but the best choice depends on whether you want elite competition, a personal comeback, an extreme-sport story, or a more critical look at the fitness industry.

Availability note: Netflix availability, ratings, language options and plan features vary by country and can change. Check the title page in your own Netflix region before you watch; Netflix adds shows and films to its sports-documentary catalogue regularly.

1. SPRINT (2024)

Best for: Track-and-field fans and anyone who wants the most direct view of elite training and performance pressure.

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Netflix describes this two-season documentary series as following elite sprinters as they manage training, media scrutiny and Olympic competition. That makes it the clearest first pick here for viewers drawn to the routine, stakes and public pressure surrounding top-level athletics. It is about the competitive environment around sprinting, rather than a programme for improving your own running.

2. Simone Biles Rising (2024)

Best for: A personal athlete comeback story with training and mental-health context.

This four-episode documentary series follows Simone Biles through her personal life, mental-health journey and training ahead of her Olympic return. It is a particularly good choice if you want more than event footage: the series places elite preparation alongside the human pressures of returning to competition. Its focus is documentary storytelling, not gymnastics coaching.

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3. The Deepest Breath (2023)

Best for: Endurance, composure and high-stakes extreme-sport viewing.

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Netflix describes the film as the story of a record-setting freediving champion and a safety diver pursuing a remarkable feat. It is gripping because the sport’s physical and mental demands are inseparable from its risk. Watch it as an extreme-sport documentary—not as guidance for breath-holding, freediving or water training. Those activities require qualified, in-person safety instruction and appropriate supervision.

4. Untold: The Liver King (2025)

Best for: Understanding fitness-influencer culture with a skeptical eye.

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This documentary examines the fitness and supplement empire built by the online figure known as the Liver King, including the backlash after a steroid scandal emerged. Its value for fitness-minded viewers is cultural, not prescriptive: it is a useful lens on marketing, image-making and credibility in an industry where dramatic physique and lifestyle claims can travel quickly. It should not be treated as an endorsement of supplements, steroids, raw-meat diets or bodybuilding products.

5. Fit for TV: The Reality of the Biggest Loser (2025)

Best for: Critical viewing about televised weight-loss culture.

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Netflix’s three-episode documentary series brings together former contestants and producers to discuss what it describes as the intense, damaging reality behind the original show’s success. This is not a motivational body-change watch or a plan for weight loss. It is most worthwhile for viewers who want to examine how reality television turned weight, competition and transformation into entertainment—and what that framing can leave out.

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6. Hack Your Health: The Secrets of Your Gut (2024)

Best for: A lighter, well-being-adjacent change of pace.

Netflix describes this documentary as an exploration of the digestive system and gut health’s role in overall well-being. It broadens the list beyond athlete profiles and competition, making it a reasonable pick for viewers interested in the health conversation around fitness. It is not a substitute for personal medical, dietary or treatment advice, and a documentary cannot diagnose a condition or prescribe a diet.

Choose by what you want to watch

If you want… Start with…
Elite training and Olympic-level competition SPRINT
A personal return-to-sport story Simone Biles Rising
Extreme endurance and sport risk The Deepest Breath
A critique of fitness-influencer claims Untold: The Liver King
A critical look at weight-loss television Fit for TV: The Reality of the Biggest Loser
Health and well-being rather than competition Hack Your Health: The Secrets of Your Gut
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Region-dependent bonus picks

Fittest on Earth: A Decade of Fitness (2017)

This is the most literal fitness fit: Netflix describes it as following CrossFit athletes competing for the “Fittest Person on Earth” title while exploring the sport’s history and popularity. During research, Netflix marked it unavailable in the browser’s country, so regard it as a check-your-region bonus, not a guaranteed selection.

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Icarus (2017)

For an ethics-and-performance angle, Icarus follows an American cyclist’s entry into a doping scandal involving Russian scientist Grigory Rodchenkov. It is a sports-investigation documentary more than a practical fitness watch, but it is a strong conditional add-on for viewers interested in the forces that can distort elite sport.

What not to expect from this list

None of these titles replaces coaching, medical care or safety training. The list intentionally includes more than gym-focused films: fitness also encompasses how athletes prepare, how media portrays bodies and performance, and how wellness claims are marketed. If you only want a CrossFit-focused documentary, check whether Fittest on Earth: A Decade of Fitness is in your local catalogue; otherwise, begin with SPRINT for the most direct training-and-performance perspective.

Frequently Asked Questions

Are these fitness workout videos?

No. This list uses a broad, practical definition: nonfiction about physical training, athletic performance, fitness culture, weight-loss culture or well-being. These are documentaries, not exercise classes.

Will every documentary be available on Netflix where I live?

Not necessarily. Netflix catalogues vary by country and change over time, as can language options and plan features. Open each title’s Netflix page in your own region before planning a watch.

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Do these documentaries provide health or training advice?

The Deepest Breath concerns a high-risk sport and is not freediving instruction. Hack Your Health is not individualized medical or dietary advice, while the Liver King and Biggest Loser films should not be read as endorsements of products or weight-loss methods.

The Bottom Line

Start with SPRINT for elite performance, then choose the rest by your interest: Biles for comeback and pressure, The Deepest Breath for extreme sport, and the 2025 titles for critical looks at fitness and weight-loss media.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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