Why the Clutch pedal of the Car is Very Hard to press

Most of the modern cars are coming equipped with automatic transmission which does not require the clutch system for gear shifting. However, there are many older cars that are equipped with a manual transmission that requires the optimal functioning of the clutch system for perfect gear shifting. If you feel that the clutch pedal is very hard to press, then it signifies issues in the clutch system. Go through the video to know the reasons behind the clutch pedal is too hard to press.
https://www.youtube.com/watch?v=ie7yPRC2O3I