Shorter daylight hours can affect sleep, productivity and state of mind. Light therapy, also known as phototherapy, may help. It uses light boxes emitting full-spectrum light to simulate sunlight.

Clearly, America's dysfunctional food culture must bear some of the blame for our excess pounds, but it's likely our walking-averse lifestyles contribute as well.

Most American diets, even bad ones, provide more than enough calcium for bone health, especially for men.

If you have difficulty sleeping or are not getting enough sleep or sleep of good quality, you need to learn the basics of sleep hygiene, make appropriate changes, and possibly consult a sleep expert.

I think instead [of happiness] we should be working for contentment... an inner sense of fulfillment that's relatively independent of external circumstances.

We're all affected by music. It has the power to inspire, uplift us, change our moods, and even alter consciousness.

If the only way you could read an email was to run a mile first, the urge would quickly die. Human beings constantly do subconscious effort/reward calculations. Tapping a screen is the easiest of physical tasks.