1: The reason for fasting more in Sha'ban has been mentioned in a hadith: in this month, deeds are presented before the Lord of the worlds, so the Prophet sallallahu alayhi wa sallam liked that when his deeds are presented before Allah, he should be in a state of fasting.
Source: Sunan al-Tirmidhi – Majlis ‘Ilmi Dar al-Da‘wah, New Delhi Edition, Page: 737