Masking can leave a person with less energy to handle other aspects of their day, from performing basic housework to processing thoughts and feelings. This, in turn, can lead to meltdowns and burnout. Something as simple as trying not to play with my hair or keeping my legs still while sitting in public can leave me depleted after a few hours.
Source: I Overcame My Autism and All I Got Was This Lousy Anxiety Disorder (p. 147)
I must pull my hair, scratch my scalp, and bounce my legs to regulate.
Autistic Burnout: The Cost of Masking and Passing – Ryan Boren