One of the most important ways to respect your brain is to work within its optimal learning time frame. In my brain-friendly music lessons, I encourage my students to work within a time frame that’s appropriate for their body-mind system.
There is a simple formula to estimate this at any given moment.
The brain has optimal lengths of time for learning that increase with age. A good target to aim is your child’s age plus two. A child who is developmentally seven years old can practice, do a worksheet or any other task … for up to nine minutes optimally without a break. After that they may continue to work but mistakes will increase, a sign that the system needs a break or change of pace. This is, of course, provided the child’s basic needs are met and they are not hungry, over tired, etc …
The optimum attention span for adults maxes out at 20 minutes so if you notice yourself getting antsy in traffic or long meetings, you may now understand why.