First Class: The new Power Plate exercise machine, which uses vibration therapy, claims to offer an exceptional workout in just 12 minutes. Jonathan Ross, Gaby Logan, Ivana Trump and Les Ferdinand are all said to be fans. Our tester, Victoria Green, says her stomach definitely looked more toned the day after her session at David Lloyd Leisure, 116 Cromwell Road, SW7. Sessions cost around £30 a time. Call 020 8450 8777 for gyms using Power Plate or go to www.power-plate.com.