4 ms·

Uh, "stop eating carbs 2 months before" sounds like bad advice that needs a lot of heavy caveats. As you know, carbs are precisely we need when going the dista

Uh, "stop eating carbs 2 months before" sounds like bad advice that needs a lot of heavy caveats. As you know, carbs are precisely we need when going the distance. I know long-time runners who even eat pasta for breakfast before a half-marathon! I'm ~64KG and 180cm tall. And I feel light when running; I have almost zero excess fat. If I reduce more weight, it would be unhealthy. As it is, I could be called (healthy) "skinny". This is one thing that's unmissable with marathon and longer runners (including the "elites"): many of them look unhealthily thin. I want to avoid going that route. • • • I'm thinking of trying gels. In my last half-m, I broke the "golden rule" of not trying anything new on race day, and paid a small price. Here's my embarrassing story, if you want to have a laugh: I only trained once with an "isotonic gel" during a training run, and that time I took the gel right before the run. The gel is supposed to provide a small dose of carbohydrates as fuel. Now, during the (half-m) race, I put the gel in my back pocket (which I didn't try out in training). At around 15KM mark, when I reached for it, I felt the goddamned gel slowly leaking in my back pocket! I managed to fish it out and down the gel, but jeez, my hands were incredibly sticky for the rest of the 5KM. (Plus: the backpocket side of my running shorts was so sticky from the fricking gel-leak that whenever I sat down after the run, I had to forcefully detach my shorts from my skin!) Now, I'm not even sure if the damn gel helped me. I suspect it even slowed me down a bit! (I'm judging this based on the pace of my last 5KM.) Luckily it wasn't a disaster, but an annoying distraction for about 5 KM. To be fair on the gel, my body was just not sufficiently used to it. I need to experiment more on how my body reacts to it. Some runners don't ... gel well with gels.

haspok 4y ago
> As you know, carbs are precisely we need when going the distance. This is completely false. You deplete your carb stores after a few hours (depending on pace etc), and then YOU ARE RUNNING ON KETONES, whether you like it or not. You physically cannot eat and digest enough carbs to sustain your pace for any longer period of time. Carb depletion can be a real shock for the first time. What happens is that your body is not accustomed to burning fat for energy, and so it just doesn't know what to do. But if you prepare it will learn how to do it, and do it rather efficiently. Unless you are a pro athlete (in which case you have your own dietician anyway) you will benefit from going keto for long distance endurance sports. Yes, your sprints will be slower, but in exchange you will simply not be hungry, or feel loss of energy (actually, a marathon is not really that long distance, if you are fast enough you won't even deplete your carb stores!). It takes a few days, maybe a week or two to switch to keto. You can speed up the process by fasting, it will not leave your body any doubt about what is going to happen :) You will feel very weak at first, but this will pass, and then you are in long distance nirvana. You just need to watch out for proper hydration (not too much, not too little) and mineral replenishment. You can even do your sport fasted, it won't make any difference! Highly recommended for those having digestive issues. As a matter of fact, I'd rather say it is highly irresponsible of anyone doing endurance sports NOT on keto. But as many other things, this is not taught at school, and people have to experiment for themselves to find out what works for them.
- wartijn_ 4y ago
  > This is completely false No it isn't. The comment to stop eating carbs was aimed at someone who is trying to do a half marathon in less that 2 hours. Like you say yourself this is way to short to deplete your carbs, so to just stop eating carbs seems like exactly the "bad advice that needs a lot of heavy caveats" that the parent poster was talking about.
  - haspok 4y ago
    There are other reasons for going keto even for a half-marathon - and who knows, maybe the full distance is next. You don't have to worry about timing your meals, or "carb-loading" which is misunderstood and yet done by so many beginners just because they read about it and they disrupt / overload their digestive system, and causes more problems than has benefits (if any - guess how I know that). I cannot really explain the feeling of not feeling exhausted after a few hours of "exercise" to someone who has not experienced it. Yes, your muscles are sore, yes you are thirsty (an unwanted side-effect of keto - you need to manage hydration!), yet your head is clear, your mind is fresh and you are ready to pounce. You feel like Duracell Bunny. Is your experience different? I'd be happy to hear about it - maybe it doesn't work so well for everyone?
    - scott_w 4y ago
      You can't even explain your position to me and I ran 23km on Saturday without feeling depleted at all. I regularly bike over 100km without being depleted. I race middle distance triathlons and the only time I run out of energy is when I stop eating carbs. You're talking absolute nonsense.
      - rojeee 4y ago
        I think OP is referring to people with poor metabolic flexibility. If not fat adapted, then you have enough glycogen for roughly 1600 calories worth of running at which point you bonk and can’t continue. If you are metabolically flexible then you substantially reduce the amount of glycogen you use at the same effort as someone who is not fat adapted. If you are very fat adapted then you can basically continue indefinitely at sub aerobic threshold pace as long as your muscles are strong enough to support you. I also have a low carb diet. It works very well for me. I was metabolically tested and burn roughly 2g of fat per minute at aerobic threshold which is pretty insane. It gets lower as you increase pace as body switches over to glycogen and then anaerobic respiration. People on high carb diets won’t get anywhere near close to that. My Aerobic threshold is >85% of VO2max (anaerobic 95%) and I can keep that up for hours even when apparently glycogen depleted (as restricted carbs in the preceding days). My running has improved immensely since going low carb - run faster with less effort and recover much faster. Obvs if I’m racing then I use carbs.

haspok 4y ago

> As you know, carbs are precisely we need when going the distance. This is completely false. You deplete your carb stores after a few hours (depending on pace etc), and then YOU ARE RUNNING ON KETONES, whether you like it or not. You physically cannot eat and digest enough carbs to sustain your pace for any longer period of time. Carb depletion can be a real shock for the first time. What happens is that your body is not accustomed to burning fat for energy, and so it just doesn't know what to do. But if you prepare it will learn how to do it, and do it rather efficiently. Unless you are a pro athlete (in which case you have your own dietician anyway) you will benefit from going keto for long distance endurance sports. Yes, your sprints will be slower, but in exchange you will simply not be hungry, or feel loss of energy (actually, a marathon is not really that long distance, if you are fast enough you won't even deplete your carb stores!). It takes a few days, maybe a week or two to switch to keto. You can speed up the process by fasting, it will not leave your body any doubt about what is going to happen :) You will feel very weak at first, but this will pass, and then you are in long distance nirvana. You just need to watch out for proper hydration (not too much, not too little) and mineral replenishment. You can even do your sport fasted, it won't make any difference! Highly recommended for those having digestive issues. As a matter of fact, I'd rather say it is highly irresponsible of anyone doing endurance sports NOT on keto. But as many other things, this is not taught at school, and people have to experiment for themselves to find out what works for them.

wartijn_ 4y ago
> This is completely false No it isn't. The comment to stop eating carbs was aimed at someone who is trying to do a half marathon in less that 2 hours. Like you say yourself this is way to short to deplete your carbs, so to just stop eating carbs seems like exactly the "bad advice that needs a lot of heavy caveats" that the parent poster was talking about.
- haspok 4y ago
  There are other reasons for going keto even for a half-marathon - and who knows, maybe the full distance is next. You don't have to worry about timing your meals, or "carb-loading" which is misunderstood and yet done by so many beginners just because they read about it and they disrupt / overload their digestive system, and causes more problems than has benefits (if any - guess how I know that). I cannot really explain the feeling of not feeling exhausted after a few hours of "exercise" to someone who has not experienced it. Yes, your muscles are sore, yes you are thirsty (an unwanted side-effect of keto - you need to manage hydration!), yet your head is clear, your mind is fresh and you are ready to pounce. You feel like Duracell Bunny. Is your experience different? I'd be happy to hear about it - maybe it doesn't work so well for everyone?
  - scott_w 4y ago
    You can't even explain your position to me and I ran 23km on Saturday without feeling depleted at all. I regularly bike over 100km without being depleted. I race middle distance triathlons and the only time I run out of energy is when I stop eating carbs. You're talking absolute nonsense.
    - rojeee 4y ago
      I think OP is referring to people with poor metabolic flexibility. If not fat adapted, then you have enough glycogen for roughly 1600 calories worth of running at which point you bonk and can’t continue. If you are metabolically flexible then you substantially reduce the amount of glycogen you use at the same effort as someone who is not fat adapted. If you are very fat adapted then you can basically continue indefinitely at sub aerobic threshold pace as long as your muscles are strong enough to support you. I also have a low carb diet. It works very well for me. I was metabolically tested and burn roughly 2g of fat per minute at aerobic threshold which is pretty insane. It gets lower as you increase pace as body switches over to glycogen and then anaerobic respiration. People on high carb diets won’t get anywhere near close to that. My Aerobic threshold is >85% of VO2max (anaerobic 95%) and I can keep that up for hours even when apparently glycogen depleted (as restricted carbs in the preceding days). My running has improved immensely since going low carb - run faster with less effort and recover much faster. Obvs if I’m racing then I use carbs.