Sleep is different the first days of your first cycle, after those initial 2-3 days sleep is fine. You will wake up to take a very long piss in the middle of the night. Bladder feels like it's going to explode. You will be sleeping less, but you feel more energized. You feel great when you wake up because it's in your system for such a long time.
Cardio is great on clen. It can really push you for long periods of time. HIIT style cardio would be a mistake as well as supersetting on clen(You'd know why if you've tried it) . Stay at a consistent pace.