If you have anxiety/panic attacks. You really need some form of meditation. This helps to reduce stress, and recharge yourself to lessen the anxiety in a day.
I would suggest taking a good Yoga or Tai Chi class, but we all know , that they are either not available to us, or we just cannot afford the time or the money for a class.
This gets us back to meditation, really it just means taking some quiet time out for yourself to sit in a calm atmosphere and deep breathe.
Find a quiet spot at home or at work, take about 10 min, 5 if you can't take more, and just sit, close your eyes, breathe in deeply and out forcefully and try to relax your muscles as you do this.
A good method it to picture your muscles relaxing in your head. Start at your toes, breathe in and as you breathe out, say relax ( or think it, either way works). Continue on up your body finding each muscle as you go until you reach your head.
As you do this, and it may take some practice, you will find that in the process of deep breathing and relaxing the muscles that you will feel all together better.
The more often you do this the better and easier you will find your day will go, and stress will soon be out of your vocabulary.
Remember to eat well and exercise everyday!
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