Beat the clock

Runner's World (UK) - - Top Tips -

Don’t panic when you can’t fit a long run into your sched­ule – sci­en­tists at Mcmaster Univer­sity, Canada, found three 20-sec all­out sprints led to the same car­diores­pi­ra­tory ben­e­fits as 50 mins of low-in­ten­sity ex­er­cise. With just three ses­sions a week, sub­jects im­proved oxy­gen up­take, despite only ex­er­cis­ing for one fifth of the time.

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