1. Dogs help their owners live longer, healthier lives. A Swedish study involving more than 3.4 million participants found that people with a pooch had a lower risk of cardiovascular disease and premature death.
2. Camping could help cure the grogginess and lethargy associated with poor sleep. In a University of Colorado, Boulder study, volunteers who went camping for a weekend slept almost two hours longer than normal during the trip; on their return, their melatonin levels started rising more than two and a half hours earlier than before.
3. Chile peppers may help you live longer. In a study involving 16,000 people over about two decades, University of Vermont researchers found that those who routinely ate the hot pods were 13 percent less likely to die during that period than those who didn't.
4. Coffee does more than wake you up. Two large studies involving diverse groups of adults found that people with a daily coffee habit were less likely to die from heart disease, stroke, diabetes, or cancer.
5. Marriage could help ward off dementia. An analysis of 15 studies involving more than 800,000 people found that those who never married had a 42 percent higher risk for this form of mental decline than those who tied the knot.
6. Breakfast could be the most important meal of the day. A study involving 4,052 healthy men and women found that those who generally didn't eat when they got up in the morning were more likely to develop atherosclerosis, or clogged arteries.
7. Running for a couple of hours each week could reduce the risk of early death by nearly 40 percent. After analyzing existing evidence on the link between exercise and longevity, researchers calculated that one hour of running — even at a slow pace — lengthens life expectancy by seven hours.