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welcome to HIT: fitter, stronger, better

fast exercise

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    • Is Fast Exercise safe?
    • Uncomplicated fitness
    • Four Fast workouts
    • NEAT stairs
    • Appetite changes

  • The latest science

    Find out more about the latest in healthy living at Dr Mosley's Fast 800. Bringing together the latest research into what we eat and how we eat to how to exercise and mindfulness.

  • Fast Books

    Available now in paperback or as an e-book. Find your stockist.

  • Fast Exercise forum

    • “ Reported Grukgo for advertising ...”
      in Who runs on the 800 plan ! • updated 1 week, 6 days ago

    • “ Hi! Yes, plenty of people run regularly while in a calorie deficit...”
      in Who runs on the 800 plan ! • updated 1 week, 6 days ago

    • “ Hi Annie, thanks for the info it’s very much appreciated. I’ve...”
      in Who runs on the 800 plan ! • updated 3 weeks, 2 days ago

    • “ Hi Stevie, I was a runner until 2018 when a serious injury and ...”
      in Who runs on the 800 plan ! • updated 3 weeks, 2 days ago

    • “ Thanks for the advice. Think it’ll be very much trial and error...”
      in Who runs on the 800 plan ! • updated 3 weeks, 2 days ago

    • The BSD exercise forum •

  • Press

    • Book review: Fast Exercise by Dr Michael Mosley and Peta Bee

      Get The Gloss, 14 Jan 2014

    • Can exercising for just 60 seconds a week transform your health?

      Mail Online, 13 Jan 2014

    • Calorie burner: How much better is standing up than sitting?

      BBC, 16 Oct 2013

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