Which phase of the cell cycle is referred to as the resting phase?

The M Phase starts with the nuclear division, corresponding to the separation of daughter chromosomes (karyokinesis) and usually ends with division of cytoplasm (cytokinesis).The interphase is referred to as the resting phase, but it is the time during which the cell is preparing for division by undergoing both cell growth and DNA replication in an orderly manner. G1 phase corresponds to the interval between mitosis and initiation of DNA replication. During G1 phase the cell is metabolically active and continuously grows but does not replicate its DNA.