On rugs

Ultimate Fitness by Gina Kolata is an interesting, informative book, but is far from living up to its title. It's not the ultimate anything on fitness. She mentions yoga once or twice. She goes into lots of detail about Spinning, but doesn't mention Pilates at all. She extols weightlifting, but ignores body weight exercises except to allege Charles Atlas really lifted weight. So according to her you should be at the gym, not home on your rugs. She begins by being scornful of people who want to get fit through slight amounts of exercise. She ends by pointing out studies showing that small amounts of moderate exercise do go the longest way toward improving your health. But does say that if you want greater strength and fitness you need intensity.