Any 10 min+ SLT serves to develop "Yi" or mental intent.
If you coordinate your movement with your breathing (not the other way around), I just don't see how you can do SLT for 10 minutes.Don't hold your breath and don't exaggerate it. Just breathe when you need to.
You can only do in 2 ways:
1. Hold your breath slow - it's unhealth.
2. Do both inhale and exhale in a single move (such as a punch) - you cannot coordinate your power generation such as "compressing" and "releasing" with your breathing.
IMO, both 1 and 2 are not good training.
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