One great thing with increasing co2 resistance is I can hold my breath for ~5 minutes and thus freedive / snorkel deep and stay long under water. But other than

One great thing with increasing co2 resistance is I can hold my breath for ~5 minutes and thus freedive / snorkel deep and stay long under water. But other than that I'm not sure, also curious about if it has any more health related benefits. For practicing breath holding, "co2 tables" is the exercise to go for, btw. I find it very relaxing in a sort of meditative "ignore the burning pain" sense, but not sure I'd recommend it vs the app in the OP hehe.