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The Expedition rounds up all the most useful, fascinating stuff I’ve encountered in the last month. It’ll help you live better.

This month, we’re covering:

* A book I enjoyed.

* Numbers on:

* How much your genes influence your strength.

* How many workouts a week younger people have to do to preserve muscle and strength.

* How many workouts a week older people have to do to preserve muscle and strength.

* A trick that will help you do 77 percent more workouts—and like them all.

* Hours of sleep a night that’ll make you sick, depressed, and anxious.

* How to prevent half of cases of dementia.

* How much money the casinos in my home state of Nevada won from gamblers last year.

* Just how strong 80-year-olds can be (hint: really strong).

* How we’re dying differently over the past five years.

* Weird strength science.

* Kids and nutrition—the competing problems of kids nutrition and what this can tell us about how you should feed your kids.

* A great story about how competition can fuel fitness.

* The true science of how sauna compares to exercise.

* A far-out idea that explains why the Scandinavian countries are so happy (it involves bloodthirsty Vikings).

* A smart, shocking take on smartphones (involving, um, McDonald’s?).

* Why you should love those who push you.

* Why problems can be opportunities (a wonderful case study involving Dead & Co).

* A good parting quote about how to live.

* A very important parting question (my answer involves guns and grapefruits).

See you on the other side …