Dimple Thakrar, Dietician & Founder of Fresh Nutrition

The best advice I ever got was from my mother-in-law, who told me I needed to drink more water for my skin. She had the most amazing skin, so I took her advice. Once I started, I realised that I got more headaches when I didn’t drink enough. Being dehydrated can also make you bloated, as your body will hold on to water and you’ll be more likely to suffer from constipation. It can even leave you feeling fatigued – people often think they have low blood sugar when they are actually dehydrated. I make sure I have about eight drinks a day (ideally no more than four are caffeinated), but go by how you feel and by the colour of your urine. It should be pale and straw-coloured: any darker and you are probably dehydrated. And 20 years on, I have great skin, too!