As your body softens, you may even discover a delightful pause developing at the very end of each exhalation, a moment or two of total stillness and spaciousness. (yogajournal.com)
At the end of each exhalation rhythmically press on the back and side of the chest. (bebezclub.com)
For several minutes, simply squeeze at the end of every exhalation. (marthastewart.com)