it become necessary). "That's good in the short term as a defence mechanism," says neuroscientist Dr Bruce McEwen, of New York's Rockefeller University. "But chronic stress remodels the brain." Brain cells bombarded with stress shrink and become cut off from
, 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
run for 132 minutes.If you ran for 150 minutes this week - next week run for 165 minutes.23. Go running, even when your head says 'no' Some days your legs may say yes, but your head says no. Give yourself 10 minutes to warm up, suggests Kastor. "A good