COLD START

The spring sunshine might be here, but a host of successful people – from Twitter CEO Jack Dorsey to national treasure Joe Wicks – are still choosing to start the day with a cold shower, and science has a reason why. Virginia Commonwealth University found that cold showers boost the production of noradrenaline – a neurotransmitter associated with mood, focus, energy and attention – which invigorates your mind ready for a day of hard work and bright ideas.