I have employed Davina to help me lose some weight, as she was going quite cheap on iTunes. This is a high impact regime of 15 mins a day... at first I thought 15 wouldn't be long enough but after 10 minutes of jumping around the living room like a maniac (Snowflake was much aggrieved by this behaviour) my legs felt all jelly-like, my heart was pounding and even Davina was out of puff. Oh well, no pain, no gain (or loss, in this case... hopefully!).