Quotes of the Day

Zone 2 is one of five levels of intensity used by coaches and trainers in endurance sports. Some models have five zones, but others have six or seven. Typically, zone 1 is a walk in the park and zone 5 (or 6, or 7) is an all-out sprint. Zone 2 is more or less the same in all training models: going at a speed slow enough that one can still maintain a conversation but fast enough that the conversation might be a little strained. Zone 2 is a powerful mediator of metabolic health and glucose homeostasis. For some people, a brisk walk might get them into zone 2; for those in better condition, zone 2 means walking uphill. [2023] - Peter Attia

America's favorite fruits are apples and bananas, with antioxidant power of about 60 units and 40 units, respectively. Mangos, the preferred fruit around the world outside of the United States, have even more antioxidant punch at 110 units. But none of these fruits are a match for berries. Strawberries weigh in at about 310 units per cup, cranberries at 330, raspberries at 350, blueberries at 380, and blackberries at a whopping 650 units. Are frozen berries as nutritious as fresh ones? Studies on cherries, raspberries, and strawberries suggest that most of their nutrition is retained even when frozen. [2015] - Michael Greger

The AUD, CAD, NZD, and CHF all have solid correlations with gold prices. The AUD/USD, NZD/USD, and USD/CHF currency pairs tend to mirror gold’s movements the closest. The Swiss franc is one of the few major currencies that still adheres to the gold standard. A full 25 percent of Switzerland’s bank issue notes are backed in gold reserves. One interesting incentive to go long the AUD/USD instead of gold is the unique ability of expressing the same view but also being able to earn positive carry. [2009] - Kathy Lien

At least 80 percent of foreign exchange transactions have a dollar leg. [2007] - Grace Cheng

Should you occasionally choose to use a prepared soup, keep in mind that your overall daily sodium intake should remain under 1,200 milligrams for men and under 1,000 milligrams for women. Natural whole foods contain 400 to 700 milligrams of sodium, which allows for a leeway of about 500 milligrams. Be sure to read labels. Try to select a no-salt added variety. [2013] - Joel Fuhrman