At what BPM do Complex Motor Skills begin to be affected?

Complex Motor Skills can begin to be affected at a heart rate around 120 BPM. This is due to the physiological stress that occurs as heart rate increases, which impacts cognitive function, coordination, and fine motor skills. As heart rates rise, particularly beyond this threshold, higher levels of stress and fatigue can interfere with the brain's ability to process information and execute intricate movements, making it harder to perform complex tasks effectively. Therefore, recognizing that 120 BPM is the critical point where these skills start to decline is essential for activities requiring sustained focus and dexterity.