Get the free Morning Headlines email for news from our reporters across the world Sign up to our free Morning Headlines email Sign up to our free Morning Headlines email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy noticeMore than half of England and Wales has been plunged into drought as the UK braces for its fifth heatwave of the year. South West Water was the latest water company to impose water restrictions. If granted and put into action, the policy would prevent businesses from activities such as filling private swimming pools. When the body gets hotter, blood vessels open up, lowering blood pressure and forcing the heart to work harder to pump blood around the body - if blood pressure drops too far, the risk of heart attacks rises.