Pinching and training are techniques that involve manipulating the shape and structure of your cannabis plants to improve their light exposure, airflow, and bud production. Some of the common methods are topping, FIMing, LST (low-stress training), HST (high-stress training), SCROG (screen of green), SOG (sea of green), and super cropping. These techniques can boost the potency of your cannabis plants indirectly by increasing their yield and quality. By creating more bud sites and ensuring even light distribution and ventilation, you can maximize the potential of your plants and produce bigger and denser buds with more resin. However, these techniques do not directly affect the THC production of your plants. They only help them express their genetic potential more fully.