Not happening regularly or continuously; stopping and starting repeatedly or with periods in between. (Cambridge Dictionary)
Something that is intermittent happens occasionally rather than continuously. (Collins Dictionary)
Coming and going at intervals: not continuous. (Merriam – Webster)
Occurring at irregular intervals; not continuous or steady. (Oxford Dictionaries)
Intermittent fasting. What are the benefits?
Intermittent fasting is not a miracle weight loss tool.