for example,do you burn more fat doing continuos 50 min cardio or do you burn more doing 2 x 25min cardio or it doesnt matter? assuming for the 50min cardio you already took in a protein shake to avoid burning muscle for energy...
2X25 minutes with a 5-15 minute break is more effective, as you will burn of calories in the break as well. Plus, you can replenish some BCAA in that break and have more overall intensity.
Works with almost every timing, 2x30 is better than 60 and so on...