.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

-based brick session - this could be 25 minutes on the rowing machine followed by long session on the treadmill. Training tip While you can use any stroke, Jameson says front crawl is fast, efficient and involves less aggressive kicking than other strokes

more bearable by combining easy outdoor sessions with treadmill work in a warm, dry gym. Start outdoors, running for 20-60 minutes. Rehydrate, then get on the treadmill for another 45-60 minutes. Beat it: On cold days, wear a baselayer and lightweight