For a slightly cheaper approach (assuming you already have an iPhone): I have been successfully and pleasantly using "Lose It!" [1] to track all of my food and exercise for about five months now. So far I've lost 20 lbs and 2% body fat. For sleep tracking, I am using Sleep Cycle [2] to measure sleep hours and (most importantly to me) wake me up at a good time. Nike+ [3] on my iPhone tracks my running times, route, distance, etc. Total cost $2.98 (plus an iPhone of course).<p>I've been amazed at how easy it's been to get into reasonable shape by changing only one thing: consistently collecting the right data.<p>[1] <a href="http://www.loseit.com/" rel="nofollow">http://www.loseit.com/</a><p>[2] <a href="http://mdlabs.se/sleepcycle/" rel="nofollow">http://mdlabs.se/sleepcycle/</a><p>[3] <a href="http://itunes.apple.com/us/app/nike-gps/id387771637?mt=8" rel="nofollow">http://itunes.apple.com/us/app/nike-gps/id387771637?mt=8</a>