The Intensity/Duration Curve – or “How come I walk for hours every day, but still get knackered climbing the stairs?”

Do you recognise the following:

“I think I’m reasonably fit.  I do a lot of walking (dozens of miles a every week), but I get so out of breath when I climb the stairs/run for a bus/play with the kids.  What is wrong with me?”

The Intensity/Duration Curve

The Intensity/Duration Curve

I recognise it.  Every single week someone comes up to me and asks me some version of this question, so here is the answer.

It is all to do with the Intensity/Duration Curve.  First of all, here are a couple of definitions:

Read moreThe Intensity/Duration Curve – or “How come I walk for hours every day, but still get knackered climbing the stairs?”

Sprints versus marathons for heart health

Flat-out Sprinting

Flat-out Sprinting

I read this story (http://www.telegraph.co.uk/health/healthnews/8429518/Sprints-better-than-marathon-for-heart-health.html) when it came out last month.  It shows how multiple, maximal effort sprints had similar effects on health compared to long duration exercise.  But after chatting with some people in the gym, I have a couple of problems with the practical implications of it…

Read moreSprints versus marathons for heart health