Sit with your legs crossed at the ankles. Hold onto the outside of each ankle with your opposite hand, and lift your legs off the floor, balancing on your sitting bones. Pull your abs into your spine and take a deep breath in. As you exhale, begin to round onto your back. Continue rolling until your shoulder blades touch the floor, lifting your hips, still holding onto your ankles. Keeping your abs in tight, rock back up to sitting, finding your balance again on your sitting bones. That’s one rep. Repeat 10 times.

Americans are getting less sleep than ever these days and it's taking a toll on our health—most visibly on our waistlines. Losing just 30 minutes of sleep per night can make you gain weight, according to a study done by the Endocrine Society. Worse, that weight is more likely to go straight to your tummy. Instead, the researchers found, the best sleep cycle is one that follows your natural circadian rhythms, which means sleeping and waking around the same time as the sun.

In this book, we look at all of the ways you can improve your own gut health, starting with the food you eat. My diet recommendations, meal plans, and recipes will help feed and protect your gut microbes. And we look at the many other steps you can take to support your beneficial bacteria, from avoiding unnecessary antibiotics to changing the way you think about dirt and germs. Even the choices you make about how you bring your children into the world can have an impact on your family’s microbiomes.
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