It is important to take into account when mowing, how much grass you take off at one time and how high or low you cut it. It is best to avoid scalping your grass too low because this forces the glass plant to tap into its nutrient reserves which can make it thin out, be more susceptible to heat, drought, weeds, pest/insect attacks & disease. Don’t take any more than 1/3 of the grass plant off to avoid scalping the lawn.
When grass is severely cut back, the growth of the roots & the plant can almost come to a complete stop until the grass blades can recover. This places a huge amount of stress on the grass which is often seen as a yellow to brownish look to the lawn after mowing.