It is a long, non-dividing, growing phase of the cell cycle, where the cell prepares itself for division.
It represents the most active stage of the cell cycle where both cell growth and DNA replication occur in an orderly manner.
It is the period of intense growth and synthesis in which a cell stocks all the biomolecules required during cell division.
It is called the resting phase because there is no apparent activity related to cell division rather, it deals with the changes that occur in a cell and the nucleus, before it enters into cell division.