Lower energy state always wins unless chasing energy source.
As a young impressionable, I set out to understand and overcome performance anxiety as someone who suffered from it. After some reading, one of my conclusions was that I should do the most stressful thing possible to understand stress better and develop physical tolerance to stress. This culminated in me signing up for a series of Muay Thai interclub fights because getting punched (or kicked) in the head while pushing your heart rate to ~200bpm is definitely up there for “stressful circumstances”.
Turns out breathing really helps in that situation too beyond just taking in more oxygen - relaxation is critical for both technical execution and strategic thinking.
Slow breathing also really helps with freediving - another hobby of mine that I dabble with that happens to involve going deep (no pun intended) on conscious relaxation.
But sure, it’s just you taking in oxygen to moderate your heart rate. Here are some papers I surfaced for you and others who are interested
[0] https://www.science.org/doi/10.1126/science.aan1466
[1] https://www.science.org/doi/10.1126/science.aai7984
[2] https://www.frontiersin.org/journals/human-neuroscience/arti...
Your brain is attached to your inner skull with candyfloss like tendrils. They do not repair. Software engineering, even prompting, with a concussion or CTE is impossible.
I do agree that getting constantly hit in the head is probably not a good idea (e.g. boxing). If you want the stress of public speaking join Toastmasters or something ;)
Maybe some do, but I've never needed it. Often I actually find public speaking easier than small groups. In a small group my brain is trying to "model" what each person is thinking about my talk, as the groups get larger that becomes impossible and I tend to relax and let go. I also find the energy in a larger setting is a useful feedback mechanism. I might toss a small joke out and see if the audience is engaged, or I will ask a question and get a show of hands. The more I engage the calmer I feel and the more enjoyable the experience is for me and my audience.
Exercise increases heart rate. The more we exercise, the more the heart gets used to that adrenergic stimulation. This decreases the number of receptors to sense adrenaline in the heart, so whenever adrenaline rises again into the system, like in public speaking, we can handle it much better.
Exercise mitigates public-speaking anxiety. Particularly prolonged cardio.
But what a godsend propranolol has been for a contentious work situation causing extreme anxiety.
Wonderful to take ahead of a scheduled meeting that could have otherwise been an hour of physical panic that no rational thought (this will feel unimportant in a week, it's just job, etc etc) could quell.
Eventually, your body learns to adapt and understand that this thing you dreaded isn't so bad after all
using phones and laptops all day stuns your brain into shallow breathing all day.when i was kid i remember my dad taking naps in the afternoon and his belly moving up and down as he slept peacefully. i dont think anyone does that anymore.
i have a pet theory that this is what is driving high gastro cancers in young ppl.