Although carb cycling does involve alternating between high and low carbohydrate days, it may not necessarily result in reaching ketosis. This is because on high-carb days, you are still consuming enough carbs to provide energy rather than forcing your body to rely on fat as its main source of fuel.
However, some people may still experience mild ketosis during their low-carb days while practicing carb cycling. This depends on individual factors such as metabolism, activity levels and the types of carbs consumed on high-carb days.