4. Drinking lots of water

Yes, you read that right: drinking a lot of water isn’t always healthy, although so is drinking too little. Researchers insist that the body’s water needs are individual. If you move a lot and do sports, drink more; if you have kidney or cardiovascular issues, better drink less. In either case, the best way to find your daily requirement is thirst – if you don’t feel it, then don’t push it.