What Really Happens To Your Body When You Turn 40

Saturday night is just another day of the week.
No pressure to go clubbing at 10 PM or stay out drinking til dawn. Not just because you can't—you'd face-plant into your mojito just as the Millennials started arriving and still want to call in sick on Monday—but because you no longer want to. Your new ideal evening involves quality time with your people, your Kindle, Netflix, and probably a glass of wine or two.