As runners, we all want to increase our endurance, but we’re often referring to different things. While the beginner often wants to go further – from two miles to four miles, then to six, more experienced runners don’t see much point in running

is not recommended for beginners because it puts too much stress on muscles and connective tissues that may not be ready to handle the load. It may also put extra stress on the knees and Achilles tendons. Hill training made its first big impact in the early 1960s

to all circumstances and all runners – the beginner who’s trying to make it around the block four times, as well as the 36-minute 10K runner who’s training for a first marathon with long runs that stretch to 12 miles, then 16, then 20.The gradual