Gulp by Mary Roach – Chapters 7 to 12

Chapter 7 will tell you which foods are the most dangerous to eat, not due to poison, because there is a higher chance that you could choke on them. We also learn about our most powerful muscles, the ones in our jaw, and why we like crunchy foods so much.

Chapter 8 involves a lot of discussion about whales, different breeds, what they eat, what they can and can’t swallow based on throat size, and if there is a possibility that a living creature that has been swallowed by a whale has any chance of surviving in its stomach or chewing it’s way out. 

Chapter 9 goes into discussing the probability of a bug being able to chew its way out of the predator that has swallowed it whole. We also learn about why some cows have those plugged up holes on their sides, why cows eat so much, and just how deep your arm can reach if you have a chance to put your arm in a cow’s fistula. 

Chapter 10 gets back to human stomachs, particularly the science behind how we know when to stop eating and what happens if we eat too much. We send signals to let ourselves know we have eaten enough, have relief functions, and if we don’t listen to ourselves the body gets rid of the excess through emergency methods. If you are fascinated by competitive eaters and their bottomless stomachs, there is also some information on that subject that may interest you. 

Chapter 11 is a very in depth look at how contraband is smuggled into prisons when the human body is the delivery method. 

If you want to know about flammability of human gases, why NASA has a flatus expert on retainer (yes, this is a real job title and area of expertise), and the possible origin of fire breathing dragon stories, you need to read Chapter 12.

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