Food and exercise fads come and go, mainly because they just aren't sustainable. After a few days, you're hungry, bored, or hungry AND bored. That's why the Today show's very first lifestyle and fitness correspondent, Jenna Wolfe, created her famous 30-Day Fitness Challenge for her viewers. The challenge was wildly successful because of its unprecedented and simple approach to everyday health and fitness - one small tip a day for 30 days. Now, in Thinner in 30, Jenna takes her foolproof program to the next level, giving you the tools and motivation you'll need to achieve your wellness goals with 30 small changes that add up to big results.