This effect is known as ‘tinnitus’, and it has a wide range of causes and manifestations.

For some people, practicing the WHM either induces or exacerbates the ringing, while for others it changes the pitch. Conversely, those dealing with chronic tinnitus often find relief from its concomitant anxiety in the calming effect of the breathing techniques.

The connection between tinnitus and the Wim Hof Method has various possible causes. Medical research shows a direct link between pulsatile tinnitus and anaemia, which the WHM may ameliorate through the elevated oxygen intake. The breathing exercises also increase neural activity in the auditory brainstem, where the brain processes sounds, possibly causing auditory nerve cells to become over-excited.

The scientific community continues to grapple with the particulars of tinnitus, but has established that the phenomenon itself is harmless. In the vast majority of cases, the ringing disappears with repeated breathing practice. If you find that, after several weeks, the noise persists or intensifies, some underlying physiological condition may be at play, and we recommend you consult a medical professional.

During the breathing exercises, you may experience involuntary muscle contraction, known as ‘tetany’. Intensified breathing causes an efflux of CO2, which in turn starts a cascade of ionization changes that leads to increased sensitivity of nerve cells. These then require less excitation to engender a muscle response, to the point where muscles can contract spontaneously. The effects are typically expressed most distinctly in the hands and feet, but can extend across the entire body.

Barring any preexisting medical conditions, this phenomenon is entirely harmless, and the effects dissipate within minutes. Over time, it may no longer arise at all. If the sensation is painful, please consult a medical professional.

If you're lying down for the breathing exercise, there is little danger to fainting. However, it does mean you went a little too far. Breathing in through the nose and out through the mouth can help stop you from breathing too fast.

If you are new to the method and breathing exercises, we advise you to breathe in through the nose and out through the mouth. This will give you more control over newly felt sensations. If after a while you feel comfortable, then it is like Wim always says: "It doesn't matter which hole you use, just get the oxygen in!" Click on the video below for Wims answer to this question:

While exhaling you stimulate the parasympathetic nervous system. This is the ‘rest-and-digest’ mode that the body assumes during sleep, so it makes sense that you might get the urge to yawn. This is perfectly fine. Check out Wim's answer in the video below.

The exercises may introduce various lights and colors, sounds or other sensations. However, it’s fine if you don’t experience any of these. Everybody responds differently; just relax and let any sensations come and go as they please. Check out Wim's answer in the video below. 

Cold exposure boosts the release of norepinephrine, which as a neurotransmitter is involved in focus, attention and mood. It inhibits inflammation by decreasing the signaling protein TNFα. Norepinephrine also acts as a hormone, promoting vasoconstriction and thus decreasing the total surface area by which heat is lost to its surroundings.

The greater the jump in temperature, the more norepinephrine is released. It follows that going from hot to cold repeatedly, augments the concomitant health benefits. The effect is thought to be more pronounced with more extreme swings, as when alternating between ice bath and sauna. Research on this is lacking, and conclusive findings have yet to be established.

The main purpose of these exercises is to activate the autonomous nervous system. In addition, it’s a great way to gauge the degree to which the breathing exercises have attenuated the speed at which your body acidifies. The autonomous nervous system is composed of two branches: the sympathetic (fight-or-flight) and the parasympathetic (rest-and-digest) nervous system. Doing push-ups with your lungs full of air activates the SNS, whereas doing them after exhaling activates the PSNS.

Both courses teach the three pillars that form the foundation of the Wim Hof Method— breathing, cold exposure, and commitment (mindset). In the original 10-Week Video Course, the techniques and exercises are explained and demonstrated in a straightforward manner, leaving up to you the situations in which to put these into practice. The Fundamentals course was created to provide more guidance and practical application, and teaches you the WHM in the context of real-world scenarios. Each week has its own theme, centered around an area of everyday life that the WHM can help improve— such as stress, creativity, and sleep. This newer course is more polished, and features yoga lessons from a professional teacher, as well as one-on-one sessions that allow for WHM practice on the fly.

Check out this side-by-side comparison of the video courses for more details.

You can find your course(s) under Dashboard > My E-Learning after logging in at www.wimhofmethod.com/login.

The video courses can be purchased in 3 installments, due monthly. You can select this option at checkout:

The installment option is not available in conjunction with coupon codes.

The course material remains available to you indefinitely, so you can take as much time as you need to complete the program, and repeat separate weeks or go through the entire course as often as you like. The videos will, however, unlock at set weekly intervals upon purchase so that after 10 weeks, all 10 are available, regardless of your progress.

Both the original 10-Week and the Fundamentals course are online programs that require broadband internet access. The videos cannot be downloaded for offline viewing.

The video courses are designed to gradually build up in intensity. It takes time for your body and mind to adapt to the new impulses, and skipping steps or rushing through the program would adversely impact your progress. Moreover, we also simply cannot manually unlock separate weeks, because the system is not technically set up that way.

You have 14 days to reconsider your purchase. If you request a refund within that timeframe, you will be fully reimbursed, no questions asked. Beyond that timeframe, you forfeit your investment. To request a refund, please send us an e-mail.

We do not yet have a proper way to gift our online programs. The best workaround is to purchase the course yourself, and then gift the confirmation e-mail you receive. That e-mail will have an orange button that says "GET STARTED". Whomever you forward the e-mail to can register through that button to have the course linked up to their own e-mail address.

Note that if you already have a user account at wimhofmethod.com, it is important that you are not logged in when you make the purchase, or the course will be automatically linked to your account.

We realize this is quite unceremonious, and hope to have a more elegant solution in the future.

The only physical requirement for the Expeditions is that you are able-bodied; you do not need special skills or experience in any specific fields, such as climbing or mountaineering. However, we do recommend you get a little familiar with the breathing and cold training. A great way to get a crash course is signing up for our free video Mini Class.

You must be able-bodied to participate in the Expeditions. If you have any medical conditions, we strongly advise you consult your physician before signing up. If you do sign up, please communicate any and all health conditions so we can ensure a safe and enjoyable experience for both you and the other participants.

We are happy to change your reservation, provided the alternative date is still available. For an overview of available dates, please visit the page for the corresponding expedition. Please be aware that spots typically go quickly once expeditions are opened for registration.

When signing up for an Expedition you can specify the number of participants. In case of separate reservations, please contact us directly.

In September 2020, we will have our next Kilimanjaro expedition. This time with a new purpose! To read up about it and to register go to: https://wimhofmethod.com/activities/kilimanjaro-expedition-2020

We support Chrome, Safari, Firefox, Opera and Internet Explorer.

In late 2017 we overhauled our website and moved to a new domain. Since the old domain is no longer active, you won't be able to access your course via old links and e-mails.

To regain access to your course, please register a new user account at www.wimhofmethod.com/register, under the same e-mail address with which you originally signed up for the 10-Week Video Course. Your course will be automatically linked to your new account, and you can then find it under Dashboard > My E-Learning.

Please click the orange "GET IT" button on the MiniClass page to actually get the MiniClass.

Please lower the security settings of your browser to resolve this issue.

When you purchase a video course, you receive an automatic e-mail that has a big orange "Get Started" button. That button takes you to a registration page, where you can enter an e-mail address and password to confirm your registration. You will then find your course under Dashboard > My E-Learning.

If you've misplaced the e-mail or have never received it, you can go to the registration page directly.

Go to www.wimhofmethod.com/login and click the 'Forgot password' button. You will be sent an e-mail that includes a link to reset your password. If you are logged in automatically, you may have to first log out by clicking the corresponding button from the downward pointing arrow in the top-right hand corner of the screen.

You cannot change this yourself, but send us your old and new e-mail address at support@wimhofmethod.com and we will happily change it for you.

Digital files can be downloaded directly via the link in the confirmation e-mail you receive upon purchase. Alternatively, you can always navigate to your Dashboard by logging in at www.wimhofmethod.com and clicking the down-arrow in the top-right hand corner of the screen. Go to My Products, and from there you can click through to the page for the digital product you want to download, and find an orange download button on the right hand side.

The codes can be a little finicky— you may need to refresh the page a few times, or use an alternate browser. You may also be trying a coupon code that has expired, or was never valid to begin with. Best to copy/paste the code rather than type it out, in order to avoid mistaking, for example, the letter O with the number 0. Note that each code is product-specific, and cannot be used in conjunction with other products.

This typically occurs when using PDF Google reader. You should be able to download the PDF just fine with the free Adobe reader.

You can select subtitles by clicking the 'CC' button in the bottom right-hand corner of the video player.