I have observed that there are long stretches of time in my life when neither anything bad or good happens.There is no suffering. This is the period of what I call “neutral karma”.One can also call it stagnant or inactive karma.It is waiting for a trigger point for activation.Karma following the action reaction theory- right now there is no action so there is no reaction either.
The more karma remains neutral, the less suffering one has to endure.
The more karma remains neutral the less bad karmas you are accumulating.
These observations are all intuitive and personal .