I do and have done both. I enjoy keto more, health wise. Energy is better. Blood sugar is the most stable. I'm still strong in the gym. Carb cycling is fun because carbs taste great, and make great addictions to meat. You may look fuller in your muscle bellies. Blood sugar won't be as stable, but more stable than 3 to 6 carb meals a day. If you do carb cycling, just do post workout. Simple carbs, not complex.