Most causes of trembling are benign, or 'physiologic.' Tremor can be a part of normal life, particularly when the person is exposed to caffeinated beverages or alcohol, certain prescription medications or undue levels of anxiety. Of all of these reasons, stress is probably the most common.
Try doing the yoga technique called 'alternate nostril breathing when you have tremors. It helps balance the parasympathic and sympathetic nervous systems:
Alternate Nostril Breathing:
Begin by sitting in a comfortable meditative pose. Your back should be straight. You may sit in a chair or cross legged on the floor.
Calm the mind by watching your breath for a minute or so with full concentration. Take nice deep, slow, breaths in and out through your
Take your right hand and bend the first and second finger in toward the base of the thumb. Leave your thumb and last two fingers (ring and pinky) extended.
Close the right nostril with the thumb and breath out through the left nostril. Exhale slowly through the left nostril, as much air as possible, with no strain. It is important to be very gentle in this process and not to force anything.
Slowly breathe in through the left nostril. Let the breath be as smooth and quiet as possible. Expand the stomach and abdominal muscles as well as the chest. Take as deep a breath as you comfortably can.
Close off the left nostril with the ring finger and pinky and open up the right nostril by taking your thumb off of it. Breathe out through the right nostril. Empty the lungs as much as possible. Slightly contract your abdomen to release as much air as possible.
When the exhalation through the right nostril is complete, Slowly and gently begin to inhale through the same (right) nostril. Let the air flow in slowly and smoothly. Be very gentle!
Now alternate nostrils again. Close off the right with the thumb and breathe out through the left, just as you did in the beginning. Continue to breathe in and out through alternate nostrils. Repeat. Practice in this way daily, for several weeks. Start with one or two rounds and increase very gradually.
As you continue your practice of alternate nostril breathing you may start to make the exhalation twice as long as the inhalation. This is easily done by counting as you breathe. If you breathe in for two counts, breathe out for four. If you breathe in three, breathe out six and so forth. At all times be very gentle with yourself. You should not strain. You should feel that you could continue like this, alternating nostrils, comfortably for a long time.
When you finish practicing alternate nostril breathing, take a few deep slow breaths through both nostrils and let the breath return back to normal. Rest for a few minutes in peace and silence. Then gently and slowly go about the rest of your day.