, running takes time to break into. "Every able-bodied person can be a runner," says Gordon Bakoulis, a running coach and author of Cross-Training (£12.99, Simon and Schuster). "Just start slowly and build up gradually." Most coaches agree that the best way

, running takes time to break into. "Every able-bodied person can be a runner," says Gordon Bakoulis, a running coach and author of Cross-Training (£12.99, Simon and Schuster). "Just start slowly and build up gradually." Most coaches agree that the best

temperature.Rule Three: When you're weight training, rest between sets.The Whole Truth: Keep moving. Nothing But The Truth: You're a triathlete, not a body builder. Sitting between sets reduces potential calorie burn. In a study from the University