1. Child’s pose make sure your big toes are touching, and your knees are slightly apart, so you stomach can rest on your legs. If you cannot touch your head to the floor, then put a book or a block under your head so you can rest it in something. You can make the book as big or small as needed. You could also put a large pillow or bolster under your stomach to really relax. If you cannot get into this position due to physical restraints, try sitting on a block or on a chair.
2. Legs up the wall: can be done on the floor with legs together or comfortably separated or you can even put a folded blanket under your hips.
The main thing is to breathe in and out through your nose. Take a breath in slowly though your nose, it does not have to be huge and then try to elongate the breath out. If you have trouble breathing out though your nose at first, you can purse your lips, like you are trying to gently blow out a candle and then let the air slowly escape your mouth.
** The reason we emphasize nostril breathing is that the in-breath particularly reshapes our attention and insight by activating our brain through our senses, such as smell and the action of slow, deep breathing, whether the inhalation or exhalation, is beneficial for our nervous system when we wish to be more still. In fact, mindful breathing emphasizes not only the breathing component, but also the mental component of paying attention and becoming aware of mind, body and breath together.
Try this 5-minute mindful breathing exercise from Mindful Magazine