It also makes it harder for the clutch pressure plate springs to push the release bearing back to its relaxed position. (mechanics.stackexchange.com)
Have two pressure plates in a room that need to be pressed simultaneously to open something? (playstationlifestyle.net)
So you are having to overcome the spring tension of the clutch pressure plate, which it the typical feel at your foot when you push the pedal down. (mechanics.stackexchange.com)