Sign: Kidneys gradually lose efficiency, and nerves that signal thirst decline Solution: Sip water throughout the day.
Sign: From early adulthood to late middle age, our metabolic rates fall by an average of 10 percent. Solution: Think of the metabolic slowdown as your body's way of getting you to be more mindful of what's on your fork or spoon.
Sign: The National Sleep Foundation says the architecture of sleep changes as we age; we spend more time in light stages of sleep and less in those that are more restful. Solution: Get more sleep than you think you need -- always at least 7 hours.
Sign: By our mid-40s, most of us have lost between 3 and 4 inches in the sit-and-reach test, ABC News reports. Solution: Do more activities like yoga and tai chi, which boost both flexibility and balance. After any workout, take time to stretch.
Sign: Psychologists have known for awhile that people tend to become more forgiving over time. Solution: Have a kinder heart. A UWM study shows heart patients who do forgiveness counseling have significantly fewer heart symptoms than those who don't.
Sign: Aging seems to reduce women's ability to tolerate alcohol. Drinking even a little more than usual increases the risk of tipsy mishaps. Solution: A little vino now and then is good, but stick to 1 glass at a time, and 7 servings per week.