Read more: New guidelines for heart health

My Turn: The pup who saved my life

She thanks her dog for leading her to a more healthful lifestyle. It could have turned out tragically.

Gear: Heart rate monitors, vital sign trackers keep you in the know during workout

Reviewed: Modula Instant Heart Rate app, Medicom MP4 Medical Identification Wristband, LifeTrac Mobile Protector, Bion Blink heart rate monitor

My Turn: Bill Hillman thanks chest compressions for helping to save his wife

Bill Hillman remembers it clearly: "It was 4:05 a.m. on Oct. 29, 2009. I heard my wife, Dianne, say, 'I think I'm having a heart attack.' I opened my eyes and I saw her standing in the bathroom doorway. She grabbed her chest, took one step and collapsed on the bed."