Then, sarcoma -- a form of cancer that begins in the bones and in the soft or connective tissues -- is one of the more common types of childhood cancer. On our Mayo Clinic Q&A segment, we'll learn about recent treatment advances from Dr. Brittany Siontis, a Mayo Clinic medical oncologist.

And, do you avoid evening workouts? We'll talk with Penelope Larsen, researcher and PhD candidate, School of Exercise Science, Sport & Health, Charles Sturt University, Bathurst, New South Wales, Australia, the author of a study that measured how evening exercise affects sleep and appetite.