O.K. so I read that article Greenlegs posted (oh isn't Greenlegs brilliant by the way) about how we all might be going too fast and it really resonated with me. I realized I'm usually trying to push myself, and judge each run by looking at my average pace and feel like I've failed if it's lower than usual. So I tried running at easy pace and it was - well - easy - and I thought - light bulb moment! this makes perfect sense. Got home from a run, showered, made a coffee, picked up the paper and....... there's an article saying exactly the opposite.
A scientist called Izumi Tabata has done studies that show VERY high intensity for 4 minutes a day gets you fitter than much longer spells of less intense exercise (for runners this would translate to interval training where you did 8 x 20 secs sprint as hard as you can with 10 second rests in between). And it basically says high intensity means really high - if you're not feeling completely done in you're not doing it right.
OK so where does that leave me - apart from confused? Well curious mostly. Have any of you tried it? Presumably the downside would be injury risk, but does it get you fitter than slow and steady? Is there a difference between fitness and staying power? Thoughts please!