Kumbhakasana (Plank pose)
All you need is your own bodyweight and enough space to get down on all your fours at full stretch for an ideal plank workout. As a rather simple movement planks are a great way exercise for people who lead a sedentary lifestyle. Performing them for a few minutes a day can boost your metabolism through the day and even during the night.
Navasana (boat pose)
This asana stimulates the muscular, digestive, circulatory, nervous and hormonal systems, tones all the organs and removes lethargy. It is especially useful for eliminating nervous tension and bringing about deep relaxation. This posture really helps to be aware of your centre, your core, and strengthen it.