I have been reading a book called Perfect Weight America. It's actually a really neat book. The author wrote it actually after gaining weight, not losing weight - his crusade is that everyone has a perfect weight, and eating right will help you get there - wether it means gaining weight, or losing weight. I don't think I've ever seen a "diet" book that has addressed BOTH issues. Incredible, really. And in the same breath he talks about conserving - water, energy, etc.
One thing that I found interesting was his section on exercise. He says doing only long-duration aerobic exercise is not good for you. And especially doing exactly the same aerobic exercise day after day. He quotes some doctor saying that doing repetitive aerobic exercise like walking on a treadmill dimishes our body's ability to produce quick bursts of energy. He recommends doing at least 20 minutes of anaerobic exercise each day.
He has a cool little chart in his book that say something like this:
1 hour of aerobic exercise: during workout - 210 calories burned, 2 hrs after workout - 25 calories burned, 3-15 hours after workout, 0 calories burned
1 hour of anaerobic exercise: during workout - 650 calories burned, 2 hours after workout - 150 calories burned, 3-15 hrs after workout - 260 calories burned
Examples of anaerobic exercise are jumping rope, sprinting, lifting weights, doing high-intensity step aerobics, and elliptical machines. Anything that is high intensity is usually anaerobic.
So add some anaerobic to your workout routine today!!