I have written previously about Kundalini Yoga and how it can help you lose weight. Not only it is a great way to get into shape and be full of energy, Kundalini Yoga has amazing sets for relaxation.
Kundalini Yoga works on weight loss in a number of ways: it speeds up metabolism via the thyroid gland and by making more oxygen available to the cells, it reestablishes hormonal balance, it helps restore energy flow into problem areas, and it works on emotional healing.
I personally use Kundalini Yoga DVDs by www.raviana.com
They have very clear instructions, great music and you can also split them into short sets of 15-20 minutes. So if you are short of time, you can still exercise and start your day full of energy!