Windshields are designed to be strong but not indestructible; avoid putting undue pressure on them by leaning against

https://wiki-zine.win/index.php/Winter_Care_Tips:_Protecting_Your_Windshield_from_Damage

Windshields are designed to be strong but not indestructible; avoid putting undue pressure on them by leaning against them when entering or exiting the vehicle to prevent cracks.