This is an exercise to refresh your whole body.
In a comfortable place, lie down on your back. Close your eyes and relax. Do a quick body scan.
Take slow deep breaths. Focus on the air entering and leaving your lungs. As you inhale, imagine that the incoming air is fresh, clean, and full of invigorating energy. Leaving your body, with all the air you exhale, are all your tensions, Toxins and frustrations. Do this for several minutes, giving your imagination full rein.
Begin to imagine that the air you inhale comes in through the bones of one leg. When you exhale, the air leaves your chest and travels down your leg and out your toes. Do this three times with each leg.
Now imagine breathing through each arm. The air enters your fingertips, moves up your arm into your chest and head. When you exhale. follow the air as it flows down your arms and leaves your hands. Do this three times with each arm.
Finally do the process with both arms and legs simultaneously.
~from Maat's Book of Shadows