Q: I am a long-distance runner who is having a lot of stabbing foot pain in the mornings. I’ve heard that this is a symptom of something called plantar fasciitis. What is plantar fasciitis, exactly, and how can I treat it?

- Hannah, Signal Mountain, TN

Q: What makes tick bites so dangerous? What is the best way to prevent and/or treat tick bites?

- Amy P., Lookout Mountain, TN

Q: I’m coaching a baseball team and I want to make sure that none of my players gets sick in the summer heat. What are some symptoms of heat exhaustion and how can I prevent it?

- Greg G., Brainerd, TN

What's the big deal with cholesterol? What's the difference between ‘good’ cholesterol and ‘bad’ cholesterol?
- Jerry S. Hixson, TN

No one's heart pumps at 100 percent. In fact, most hearts pump only a little more than half their volume with each beat. That proportion is called your ejection fraction (EF)- and it can mean the difference between normal heart function and heart failure.