FOR BETTER POSTURE

Gaiam Balance Ball Chair, £76.76, athleteshop.co.uk THIS chair consists of a balance ball on a stand with a back rest. ‘ You’ll improve your posture and spinal alignment while getting a powerful corestrengthening workout,’ says the maker. ‘ Balancing on a ball requires you to be upright, encouraging you to switch on the “sitting muscles” — such as abdominal muscles and those in the buttocks,’ says Sammy Margo, a physiotherapist in North London. ‘ Using these helps strengthen them, protecting the lower back and improving your posture. ‘It would be too tiring to sit on a gym ball all day, which is why I like this chair, as you can sit against the back rest for support.’