Always read David Higgins column in the Evening Standard. (He co-founded TenPilates, www.tenpilates.com. ) This week he talks about remembering to sit on your sit bones even when not in the gym. It’s important to maintain good posture and not give into “prolonged slump sitting” which as well as increasing “pressure on our lumbar discs”, leading to degeneration “can also stretch the back’s protective ligaments” leaving us vulnerable to injury. Slip a hand under one buttock to find the rounded bony shape of the sitting bone at the bottom of the pelvis. As you slip your hand out, you may become aware of the sit bone making contact with whatever you’re sitting on. Repeat on the other side. You’ve just made yourself aware of a part of the body you don’t normally notice. Occasionally rock gently from one sitting bone to the other to ensure you are balancing evenly on the two bones and not on your coccyx. As well as continuing to exercise the core muscles, you are helping your back.