
Kettlebell flows are a neat way to combine a small number of exercises into one longer move, and can feel pretty intense as they limit your rest time and increase your working time.
You'll see many coaches use flows as a strength and conditioning tool, often as a finisher, but sometimes as a longer routine for those well-versed with them. They put your body through the wringer, giving you little time to recover when you're (quite literally) in the flow.