Yoga - why is breathing through your nose better?

I have been doing Bikram (i.e., Hot) yoga for a few months. The instructors go out of their way to emphasize the need to breathe through our noses. This morning, the fella discussed how “if you breathe through your nose, it helps regulate your heart and keeps the rhythm steady; breathing through your mouth can accelerate your heart.”

Really?! Is that pseudo-meditative mumbo-jumbo or is there something to that? Don’t get me wrong - I love yoga, but am aware that some folks invest it with far more than the practical mental/physical benefits that I look for from it.

An while I am at it - is there any “official” rating or ranking of how 90 minutes of hot yoga stacks up to other forms of exercise? Just curious…

I’ve been doing Bikram for about a year and a half. I’ve pondered the same thing and I think that breathing through the nose, especially the exhale, facilitates slower breathing. Obviously, you can breath slowly through your mouth too but I find I am able to concentrate or be more aware of the breathing when it is through my nose for some reason.

A 90 minute Bikram session will burn around 1000 calories for the average person.

Perhaps its simply less distracting that breathing through your mouth? Mine tends to get dried out which can cause a lapse in concentration.

WAG here but maybe your wee nose hairs are purifying the air for you, too.

Your nose does protect against pollutants like pollen and germs.

IN my class my teacher explains that because you are controlling your breathing more, you are warming up better.

I don’t know if it’s true or not, but it seems to work.

A standard suggestion for helping slow down panic attacks is to breath in through the nose as well - it basically forces you to slow your breathing down as its a narrower passage. Anxious people tend to overbreathe - we only need to breathe about 10-12 breaths a minute. So there is some justification for it as a way to make sure you’re not overbreathing.

1000 calories is roughly the same as doing a 10 mile run in that time. Im a wee bit dubious.

Otara

FWIW, this site says that 1.5 hours of Bikram yoga for a 150 lb person will burn a little over 1000 calories. According to the same site, this is the same burn rate as running 9 miles in the same time which roughly matches your figure.

A standard rule of thumb for running is that 1 mile burns about 100 calories. It varies a little depending on speed and body weight but is a good starting point.

The thing is that calorie rates for running are an incredibly well researched topic and Im not convinced the same is true for Bikram Yoga. The site suggests they’ve extrapolated those rates from a METS calculation rather than doing it by direct measurement and its not clear where they obtained those METS measurements from. Frankly the idea that its equivalent to a METS rate of about 10 is something I find a wee bit hard to buy - not saying its impossible but that Im certainly dubious.

Id be wanting something a bit more comprehensive than that as a cite as before Id be willing to believe it.

Otara

Some info here about nose breathing vs mouth breathing.

Basically, nose breathing prevents hyperventilation and allows for a full inflation of the lung.

The simple act of levitating consumes enormous calories.

As sort of a hijack, How accurate are the calorie counters on elliptical stair masters? I basically do about 11 calories a minute. Which is roughly inline with 1000 calories in 90 minutes for running.

I’m not invested in that factoid and I am far from an expert in the area. It could well be less.

Well theres this cite: http://www.ellipticaltrainers.com/articles/elliptical-calories.htm

Where they give examples where your workout could vary between 300 and 400 calories between two different brands. So thats a fairly big difference if they’re using actual variation levels between real machines.

They recommend you " use the calorie burn readout as a figure for determining progress, but not as an absolute.", makes sense to me.

Otara