The crossword solution for the term 'SPEEDS THROUGH SHAKESPEARE' is HIES, which stands for 'high-intensity exercise sessions'. HIES is a type of exercise that involves short bursts of intense physical activity, such as sprinting or jumping. It is often used to improve cardiovascular fitness and muscular strength. HIES has been popularized by Shakespearean actors, who use it to quickly build up their stamina and agility for performances.