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Being happy during our walking hours is also important. Laughter is the body's natural way of reducing stress and it also improves blood circulation. A research conducted in the Netherlands indicates that there are close links between having a positive attitude and health. According to the study, optimists are 55% less likely to die of one of the most significant killer diseases of our time, such as heart disease, that someone with a negative attitude. In order to maintain happiness, it is also important to be able to leave work in the workplace, employment-related stress is on the increase and is not only detrimental to health, but can also have a knock-on effect on our personal relationships, which can lead to a spiralling situation of unhappiness and high anxiety levels.