Breathing Techniques

Wim Hof

54% Trust Score
704 claims analyzed
6.6 followers
67 verified · 384 questionable · 116 debunked

Is Wim Hof trustworthy?

Wim Hof has a Verify Influencers Trust Score of 54 out of 100, which we classify as mixed. Of the 704 health claims we analyzed, 67 are verified by peer-reviewed research, 384 are questionable, and 116 are debunked.

Wim Hof's most repeated claims

Questionable (57/100) — Tinnitus (ringing in the ears) can occur if you push too forcefully during the breathing exercises; if this happens, you should reduce the intensity of your practice. (Biohacking & Optimization)
Questionable (41/100) — The method has been reported by practitioners to help manage symptoms of autoimmune diseases like rheumatoid arthritis and Crohn's. (Biohacking & Optimization) source
Verified (75/100) — Never practice the breathing exercises in or near water (pools, bathtubs, showers) due to the risk of shallow water blackout and drowning. (Biohacking & Optimization) source
Verified (84/100) — Cyclic hyperventilation (Wim Hof breathing) causes the blood pH to rise, making the body more alkaline by expelling large amounts of CO2. (Biohacking & Optimization) source
Verified (72/100) — Practice 30 to 40 deep breaths, inhaling fully through the nose or mouth and exhaling naturally without force, to alter blood chemistry and increase pH levels. (Biohacking & Optimization) source
Questionable (63/100) — Beginners should start with 30 seconds of cold water at the end of a warm shower and gradually build up to 2-3 minutes over a period of 5-10 days. (Cold & Heat Therapy)
Questionable (67/100) — The breathing technique allows for voluntary control of the autonomic nervous system, which was previously thought to be impossible in medical science. (Biohacking & Optimization) source
Verified (73/100) — Never practice the Wim Hof breathing technique in a swimming pool, before going underwater, or while driving, as the risk of passing out (shallow water blackout) is high. (Biohacking & Optimization) source
Questionable (69/100) — The Wim Hof Method is contraindicated for individuals with a history of seizures or epilepsy due to the hyperventilation component. (Biohacking & Optimization) source
Questionable (55/100) — The breathing technique can help reduce snoring and improve sleep quality by modulating breathing patterns and reducing inflammation. (Sleep & Recovery) source

Verified claims

Verified (75/100) — Never practice the breathing exercises in or near water (pools, bathtubs, showers) due to the risk of shallow water blackout and drowning. (Biohacking & Optimization) source
Verified (84/100) — Cyclic hyperventilation (Wim Hof breathing) causes the blood pH to rise, making the body more alkaline by expelling large amounts of CO2. (Biohacking & Optimization) source
Verified (72/100) — Practice 30 to 40 deep breaths, inhaling fully through the nose or mouth and exhaling naturally without force, to alter blood chemistry and increase pH levels. (Biohacking & Optimization) source
Verified (73/100) — Never practice the Wim Hof breathing technique in a swimming pool, before going underwater, or while driving, as the risk of passing out (shallow water blackout) is high. (Biohacking & Optimization) source
Verified (76/100) — Wim Hof successfully suppressed his immune response to an E. coli endotoxin injection by practicing his breathing and cold techniques for 4 days prior. (Biohacking & Optimization)

Debunked claims

Debunked (38/100) — The breathing technique can increase cell metabolic activity by 300% just through conscious intention and focus. (Biohacking & Optimization) source
Debunked (27/100) — Wim Hof completed a full marathon in the Namib Desert (40°C) without drinking any water, claiming his breathing technique allowed him to regulate internal hydration and temperature. (Biohacking & Optimization)
Debunked (25/100) — Practicing the breathing technique can double the number of push-ups you can perform in a single set by doing them during the breath-retention phase. (Biohacking & Optimization) source
Debunked (38/100) — The breathing technique can double the amount of push-ups a person can do in a single session by saturating the muscles with oxygen. (Exercise & Fitness)
Debunked (36/100) — Wim Hof claims that holding the breath after exhaling allows 5 times more oxygen to flow to the brain and heart once you finally inhale. (Biohacking & Optimization)

Frequently asked questions

What is Wim Hof's trust score?: Wim Hof has a Verify Influencers trust score of 54 out of 100, based on analysis of 704 health claims against peer-reviewed scientific research.
Is Wim Hof trustworthy for health advice?: Wim Hof has a Verify Influencers Trust Score of 54 out of 100, which we classify as mixed. Of the 704 health claims we analyzed, 67 are verified by peer-reviewed research, 384 are questionable, and 116 are debunked.
How many claims has Wim Hof made?: We have analyzed 704 health claims from Wim Hof across YouTube, social media, podcasts, and their website.

Scores follow a fixed rubric and are re-checked on a rolling cycle. How we score and how to request a correction. Last updated 2026-05-16.

See all scored influencers