Andrew Weil is a big proponent of "4-7-8" breathing. He recommends it to almost all his patients. He says that you have to do it consistently for a while (like months) to get the beneficial effects, but the beneficial effects can be profound.

This is one of the things I have added in addition to "SNAP CLUB". I'm doing yoga as well and part of yoga "Pranayama" deals with various breathing techniques. I find many of these to be beneficial and interesting. I'm still exploring, but I do these every day.

- vital