“Scientists know that you can not learn new material while exercising at high intensity, because blood is shunted from the prefrontal cortex which hampers executive function." - Dr. John Ratey
LISS = Low Intensity Steady State movement: (Slower Rhythmic Movement)
Increased circulation leads to an increase in glucose, nutrients and oxygen to the brain. Low intensity sustained movements deliver nutrients (fuel) to the brain and enhance the brain's function.
Large muscle group movements (like leg movements during pedaling) at a low to moderate heart rate response is a LISS movement. We are not overtaxing the body like higher intensity exercise. It is a slower, low intensity, rhythmic movement. The energy expenditure and requirements of the body during LISS are in balance.
(Remember: High intensity is best used before, not during active learning situations.)