.co.uk)."You will also become a stronger runner: working out on varying terrain and uneven surfaces strengthens muscles and tendons." Here's how to make the break.Run/WalkIf you've only ever run in the gym, your first outdoor session may be tricky. "Treadmills help you
board.Because you toe-off and jump, you come down forcefully on the other foot. This is the infamous ‘impact shock’ of running – said to be two to three times your body weight – that can lead to over-use injuries of the foot, knees, tendons and so on
