Walking is the simplest form of exercise but your first time on a treadmill might be intimidating.  Here are my simple guidelines for walking: Beginners – Start with ten minute intervals 2.2-2.9mph. Hold on for balanceIntermediate – Increase speed to 2.9-3.5mph. Swing arms at sideAdvanced – Speed can be varied 3.0-4.5mph Challenge intensity by adding... Read more »