Back in April of this year, I made a change to my diet and started eating a paleo / or primal style diet. If you missed my original post about what that entails, you can read it here.
Part of my motivation for overhauling my diet was because I believed it would improve my running performance and allow me to use primarily stored body fat, rather than sugar as fuel. I wrote about my quest to become a fat burning beast back in May. You can read the post here.
I have to admit, despite what I had read and heard about going paleo and what it might be able to do for my running, I had my doubts. Having been a sugar burner all my life, I didn't see how it would be possible to run for 3 hours plus, in a fasted state and not chugging down loads of gels and energy drinks before, during and after the run.
But on Sunday, that's exactly what I did. As part of my training for the Chester Marathon, I ran 22 miles at an average of 7:59 minute miles. That's just under 3 hours of running. What did I fuel myself on? Well, I got up, had a coffee with cream and that's it. On the run, I consumed 750ml of water and nothing else. The statto's can see my Strava activity here.
I'm not going to say it was easy. After all, I was running at PB pace. But I felt stronger as the run went on. I never had any sugar crashes or came close to hitting the wall. Not only that but I recovered really quickly after the run. I didn't get back and feel like I had to eat all of the food in the house and was still able to commit to the list of chores Mrs M had lined up for me!
Without even training for speed, I have PB'd in the 5k and 10k since going paleo. Losing a stone in weight will do that for you. Plus, I am saving a fortune in 'nutritional products' as I am not having to buy gels, energy drinks and recovery shakes.
Obviously the big test will be Chester. Not forgetting the small matter of the High Peak 40 ultra marathon a few weeks beforehand but after eating paleo for 5 months, I do now feel like I can call myself a fat burning beast!
Showing posts with label chester marathon. Show all posts
Showing posts with label chester marathon. Show all posts
Thursday, 11 September 2014
Tuesday, 10 June 2014
A quick update on my quest to become a fat burning beast!
So, I have been eating a paleo / primal diet for just over 2 months now.
As I mentioned in my previous post, I have found the transition to a low carb diet really easy and I am someone who has always eaten a lot of carbs and sugary snacks.
Mark Sisson says that a good way to test if you have become a fat burner (also known as fat adapted), it whether you can skip a meal without feeling feint, ratty or any other symptoms you would usually associate with missing a meal. Previously, I would have struggled going even a few hours without a meal or a snack and my wife could always tell when I was heading for a sugar low because I would become really short and snappy! I am now at a point where I can comfortably go for 6 hours without feeling the need to eat. Often, that window will have included some exercise.
When I adopted this way of living I felt that the challenge was always going to come when I wanted to teach my body to burn fat (rather than carbs / sugar) during my long runs. I feel I am well on my way to becoming fat adapted and I have been able to run for over an hour and a half without any fuel (and even in a fasted state). This is running at my sub-aerobic threshold of less than 135 BPM (or 75% of my max heat rate). The trouble is, currently this equates to roughly 9:30 minute miles. My target mile pace for Chester Marathon is 8:00 minutes per mile. As you can see, I have some work to do in order to be at 75% of my max HR whilst running at 8:00 minute pace!
Having run an easy 10k on Saturday, I tried for a fasted 9 mile effort at marathon pace on Sunday. I don't mind admitting that I found this harder than expected and simply wasn't able to hold the pace in the final few miles. It is all well and good being able to go for 6 hours without needing to eat but I need to ensure that I have enough fuel for my runs, so this was a good lesson in this regard.
I have faith in my training plan (which starts on 17th June). I used the same plan for Berlin last year and I remember how my fitness improved on those longer, marathon paced efforts. Of course, I was a sugar burner last year, so it will be interesting to see how my body copes with those longer training runs this time around. Watch this space!
As I mentioned in my previous post, I have found the transition to a low carb diet really easy and I am someone who has always eaten a lot of carbs and sugary snacks.
Mark Sisson says that a good way to test if you have become a fat burner (also known as fat adapted), it whether you can skip a meal without feeling feint, ratty or any other symptoms you would usually associate with missing a meal. Previously, I would have struggled going even a few hours without a meal or a snack and my wife could always tell when I was heading for a sugar low because I would become really short and snappy! I am now at a point where I can comfortably go for 6 hours without feeling the need to eat. Often, that window will have included some exercise.
When I adopted this way of living I felt that the challenge was always going to come when I wanted to teach my body to burn fat (rather than carbs / sugar) during my long runs. I feel I am well on my way to becoming fat adapted and I have been able to run for over an hour and a half without any fuel (and even in a fasted state). This is running at my sub-aerobic threshold of less than 135 BPM (or 75% of my max heat rate). The trouble is, currently this equates to roughly 9:30 minute miles. My target mile pace for Chester Marathon is 8:00 minutes per mile. As you can see, I have some work to do in order to be at 75% of my max HR whilst running at 8:00 minute pace!
Having run an easy 10k on Saturday, I tried for a fasted 9 mile effort at marathon pace on Sunday. I don't mind admitting that I found this harder than expected and simply wasn't able to hold the pace in the final few miles. It is all well and good being able to go for 6 hours without needing to eat but I need to ensure that I have enough fuel for my runs, so this was a good lesson in this regard.
I have faith in my training plan (which starts on 17th June). I used the same plan for Berlin last year and I remember how my fitness improved on those longer, marathon paced efforts. Of course, I was a sugar burner last year, so it will be interesting to see how my body copes with those longer training runs this time around. Watch this space!
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