As a personal trainer, I get a lot of requests for beginner style workouts that someone could do who has been out of the game for a while, wants to get started and doesn't want to stick with the same old cardio workout, and for postpartum moms who have been ok'd to get back into their routine again after giving birth. I designed this workout with that in mind. This is a very standard workout with 10 straight forward exercises to be completed 10-15 reps each or for 30-45 seconds each. Using the timed way, you may find you are getting more reps of certain exercises (say jumping jacks) and less of other exercises (say walking plank). The point I want to stress with this program is to GO AT YOUR OWN PACE. If the 30-45 seconds works great for some of the cardio moves, but the bodyweight strength works better for you to go as a rep'd exercise or vice versa, then go for it! You know your body best and can always increase the intensity as you go forward. As far as how many rounds, I would shoot for 3x through. If you feel great after 3x and want to go a bit further, then more power to ya! If you are adding this at the end of a power walk or cardio session, then maybe shoot for 1-2x through. Listen to your body, it will tell you what it needs!