Stretching at work, heart rate 107, normal?

Stretching heart rate 107 beats/min is normal, according to the specific situation analysis:

if the heart rate 107 beats/min is temporary, can recover to 60~100 beats/min, and no discomfort, generally normal, stretching heart rate slightly increased is physiological reaction. If the heart rate continues to be at 107 beats/min level or further increased, and there are palpitation, shortness of breath, chest pain and other symptoms, generally abnormal, may suffer from hyperthyroidism, the disease causes hypermetabolism, so that the heart rate increases.

A variety of factors can lead to increased heart rate, such as physical activity, emotional excitement, stress, intake of caffeine or other stimulating substances.