At this time your heart system is unbearable noisy and noisy. This phenomenon is directly related to mood.
The emergence of a new dance or a new drill, there will often be a part of the people will be the first, led by them to learn, the overall progress of this matter will be fast, not because a few still will not be tired of the repetition, this time period will have their own in the square of the atmosphere of learning to produce anxiety, or think that the progress is slow, or think that the progress of the rapid progress, this kind of emotion will be directly transmitted to their own brain, at this time, the mood will be worse and worse, dizziness, dizziness along with will come.
Sometimes it's not about being angry with others, but being angry with yourself. This phenomenon is necessary to adjust their emotions.
If these phenomena are ruled out, you can be alert to heart problems. Go to the hospital as soon as possible to do a checkup, to release their own concerns as well.