attention span on white

folding attention spanon white paper background span span focus concentration distraction mental stamina cognitive capacity sustained attention selective divided information processing mindfulness engagement resilience load fatigue agility distractibility multitasking performance endurance vigilance perseverance task switching flexibility inattention hyperfocus attentional control fitness overload dexterity alertness resources management absorption restoration regulation effort shifting focused diverted directed blink disturbance concentration skills acuity efficiency engagement