That depends on the technique you are using. Breathwork and breath-holding feels amazing, who wouldn’t want to practice multiple times a day?!
Too much hypoxia can lead to chronic hypoxia, which is very damaging to the body. Chronic hypoxia begins at around 15 cycles of hypoxia per day.
In any SOMA session, we use a maximum of 5 cycles of hypoxia: That’s more than enough to get all of the amazing benefits.
With that all taken into account, your daily practice should not really exceed 5-10 cycles of hypoxia. There’s no need to do any more than that; you don’t need to go overboard with it!