The right pressure! I used to accidentally break a main branch in the main lining training; the plant became three arms! In order to distribute the subsequent growth evenly, I made a twist; I made the plants three branches evenly; I got a surprise! After about 15 days, I found that the twisted stems had extra expansion at the joints and they were very thick! (Stalks are plants that absorb nutrients from the roots to transport nutrients to the apex and branch channels, the shorter and wider the channels; the top nutrients will be able to get more!) This will lead to big colas! All training on harvesting; I will follow the 3 principles~1: Let plants build strong roots, 2: Let plants give maximum light and nutrients in the digestible range (they need balance data!), 3: Try to transport nutrient channels ~ stems! Become stronger! Of course; skills and theory I have been learning; thanks to the great website, thanks to the nebula and the experience sharing of all the great growers! Cheers