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LST doesn't mean "Slow Stress Training", it means "Low Stress Training", e.g. although it is stressful to the plant to be bent, it's lower stress than topping, super cropping, etc etc etc.

Pro's usually say that SOG gives a larger yield all in all, like annually or over a given period of time - not because they yield more than ordinary, larger plants, but because thier turnover is quicker.

LST allows you to get your lower side branches as large as the main cola/stem.
I find it easy and fun, and you get thick, bushy plants.

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