After working on fitness DVDs, Bollywood actress and fitness enthusiast Shilpa Shetty is now writing a book on heath and nutrition to emphasise the importance of Indian food."I'm penning a book on health and nutrition. I really have been passionate about making people aware of nutrition because that’s a major part of good health,” Shilpa said at an event here. “So, if you are working out without proper diet, its all futile. You've got to know right time to eat, what to eat and how to eat. People have forgotten how amazing Indian food is,” added the mother of three-year-old boy Viaan Raj Kundra.Shilpa, who turned 40 earlier this month, feels yoga has nothing to do with politics as it has its own “spiritual” value.She said: “Yoga has changed my life. I have never planned my life. I just go with the flow. My relation with yoga is on a whole different level. It's very spiritual. If you want to change your lifestyle with yoga, then it should be kept away from politics."