Well, I've only gone and signed up for the 5k Parkrun that will herald the end of our course.

Am slightly scared but Sam, Jo, Lynn and Judy have faith so I'm hoping to nick a little bit of theirs.

What has been a massive surprise is my appetite.

I haven't had breakfast every day since my GCSEs, when I was made to by my mother for my 'brains' - she wasn't onto a winner there - and as a grown-up I often, due to circumstance, have one meal in the evening.

But since this running has taken hold, I have never been so hungry.

I must eat in the morning otherwise I feel a bit light-headed, a small snack at my desk round lunchtime is de riguer and I need a good meal at night.

I feel like I should be sponsored by Belvita, the amount of breakfast biscuits I cart round with me.

I'm often still hungry after that lot and have been known to have a small supper of peanut butter on toast (just one small slice, mind).

And yet, despite eating more than I ever have before, I've lost nearly one-and-a-half stones.

Smaller trousers I bought last week are now getting a tad baggy and loose around the waist.

According to Sam, apparently I've kickstarted my sluggish metabolism - although she never called it sluggish, in all fairness.

I actually thought I probably didn't have one.

Like my hip bones, it has been something of a revelation. 

As long as I keep feeding the beast in my belly with good nutritious foodstuffs, I am on the road to keeping at a healthy weight.

I think I heard Sam suck her teeth when I mention breakfast biscuits and a follow-up email from her says: "The breakfast bars are a good start. Even better would be taking your own wholegrain cereal to work with you and having a ‘proper’ breakfast there."

Oops. It's one step at a time for me, I'm afraid and I'm just not that organised.

Sam doesn't preach calorie restrictions or "diets" however - she says balance is key. She says breakfast is the best meal of the day to prevent weight gain and people who eat it are more likely to be a healthy weight.

To be honest, this weight loss has hit me for six - it wasn't my aim to do this to lose weight, it's just a happy byproduct.

She also thinks I'm losing weight too quickly and not eating enough.

Sam says the mistake some people make is to think 'I've gone for a run, I can have a massive fry up/loads of chocolate and cake' and it doesn't work like that - you have to do an awful lot of exercise to make sure your calorie in/out ratio is balanced.

I've got to eat a bit more and aim to lose a pound a week.

I'm not sure I want to get into this though. I've never dieted in my life.

Despite being a tubby girl, I'm actually comfortable being fat and a bit fitter. Let's face it, I'm never going to look good in Lycra. 

If I lose more weight, great. If not, so be it.