Drummers achieve high speed by using a combination of physical technique and mental conditioning. They often practice with slow tempos to ensure accuracy, gradually increasing the speed over time to build stamina and precision. Drummers also use a variety of grips and stroke techniques to maximize efficiency and power while minimizing effort. Furthermore, they often condition their hands through exercises and warm-ups to improve wrist and finger strength and flexibility. Lastly, drummers often utilize a technique called “doubling”, which involves striking the drum twice in quick succession using a single hand, allowing them to effectively double the speed of their rolls and flams.