Stress can cause us a great deal of problems both physically and mentally. Should you face a great deal of stress you are likely to be putting a huge amount of pressure on your heart as blood pressure rises, leading to all manner of ailments some of which can potentially be fatal. On top of this, stress can also lead to lack of sleep, which can compound both physical and mental problems, meaning that our bodies are less able to repair themselves whilst mentally we become more irritable and less able to focus. In turn, the lack of focus can lead to more problems arising, and a vicious circle developing where ultimately stress breeds more stress.