We don't always feel 100 percent all the time, and it's normal to feel a little nauseous, tired, or sniffly every once in a while. These are minor symptoms though, and usually go away on their own. But there are a few red flag signals our bodies flash to warn us of serious medical conditions, and they're symptoms you shouldn't pass off as nothing. WebMD spoke to the authors of Your Body's Red Read more

There are many things you shouldn't do before a workout, such as cold stretching (learn more prewrokout no-nos here). To make the most of your actual workout, here are a handful of things to avoid while getting your sweat on. Exercise on an empty stomach: Used as a common weight-loss technique, exercising on an empty stomach can actually prevent weight loss. Without fuel in your system, Read more

The other day, I accidentally skipped my morning cup of coffee but didn't realize until I got a late-morning, dull headache. I remembered the sensation from my caffeine-addicted college days and it set off a red flag in my mind. Researchers agree that a small amount of caffeine (around 300 mg per day) can promote health; moderate caffeine consumption can help sore muscles and improve alertness. Read more