Can I lose weight and is it a cardiovascular workout?
Yes absolutely! In time the yoga will help you lose weight; with regular practice you will lose inches and develop muscle tone. Do not be surprised if at first you do not seem to be losing weight on the scales even thought you look lighter, do not forget muscle weighs more than body fat.
As you are losing weight you are building strength and stamina with the Yoga.
The Yoga provides a strong cardiovascular work out. Some of the postures speed up the heart rate in the first few seconds thus strengthening the heart. A good sign of health is that you can speed the heart rate up quickly and then slow it down quickly. You will learn to practice the postures with your breath.
The heat in the room supports your cardio work out.