Tai Chi Chuan encourages reverse abdominal breathing, the most efficient way of breathing. How we breathed when we were babies. Pull the abdominals in when you breathe in. Push the abdominals out when you breathe out. You must relax the chest and shoulders to accomplish this.
Sit comfortable with back upright. Lift the top of the head, tuck in the chin. Relax the shoulders and chest. Breathe through the nose (if you can, use abdominal breathing). With each out breath, feel the body relax. Try to make the breathing even and continuous. Recommended 5 minutes.
Sit toward the edge of the seat. Place feet directly under the knees. Place the palms over the knee caps. Lift the top of the head, tuck in chin. Image drawing air in through the abdomen and breathing out through the palms of your hands, warming the knees. When you are done, stop on an out breath. Next rub the knees vigorously. Rub legs and calves, then sit relaxed for a minute.
Stand with the feet at shoulder width, knees slightly bent. Lift the top of the head, tuck in the chin. Single fold the hands to cover the palms, arms relaxed and hanging to the sides. Relax shoulders and chest. You can close your eyes or if there is a balance issue, leave your eyes open. Breathe through the nose, try to use abdominal breathing. Recommended 5 minutes. If you start to feel dizzy, stop.
Singing is a great breathing exercise. Belt it out. Also, laughter is great for the lungs and the soul at our age. Just look in the mirror. It’s laugh or cry. May as well laugh.