High carbs, low carbs, moderate carbs – depending on who you talk to,you will likely hear one of these recommendations being touted as theoptimal approach to maximum fat loss. So what's the truth? The truth ofthe matter is that there is really no one best way. Each of the abovemethods has been used by countless people – from bodybuilding andfitness competitors all the way to your every day gym rat – and usedsuccessfully at that. In actuality, how many carbs you are eating isnot the key determinant of your fat loss progress; calories are. Moreon that later though. The key to successful fat loss is payingattention to your body, following a plan designed for your body andmaking the necessary adjustments to your program as your body changes.With that said, a nutritional strategy that includes both carbohydrateand calorie cycling in a structured plan built around your trainingprogram could be just what you're looking for. Let's take a closer lookat this carbohydrate issue first.Truthbe told, there are benefits to having a fair amount of carbs in yourdiet and there are benefits to keeping them low. So why not use bothstrategies? Said in a simpler way, why not cycle your carb intake, andsubsequently your caloric intake? By cycling your carb intake you getthe best of both worlds. Assuming you keep your protein and fat intakesrelatively constant, and only manipulate your carb intake, you areautomatically cycling calories as well. The first benefit to doing sois that it keeps your body from adapting to what you are doing. Yourbody will always try to adapt to what you're doing and the further youmove away from your natural set point, the harder your body is going totry to pull you right back. This is just in part related to theregulatory hormone, leptin.Leptin levels are related to thingslike insulin, your caloric intake and your current level of body fat.Think of it as one of the big "fat-loss decision makers". The leaneryou are the lower your circulating levels of leptin are going to be. Onthe flip side, under normal conditions, leptin is plentiful. However,while on sub-maintenance calories, and particularly on low-carb dietswhere circulating insulin levels are low, leptin levels drop and theycan drop quickly. Decreased leptin levels cause a cascade of otherregulatory changes, namely a decrease in thyroid output and metabolicrate, as well as an increase in catabolic hormone activity andappetite. In an attempt to become more efficient, your body will try toadapt to make your newly lowered caloric intake its new maintenanceintake; that is, it will make the necessary changes needed to do thesame amount of work on less energy. Unfortunately, this usually meanshaving to continuously lower calories to maintain fat-loss progress,which inevitably makes it very hard to hold onto all your hard-earnedmuscle. None of this sounds too good does it? There has to be a betterway, and there is. Planned and structured days of high calories andhigh carbohydrates may help with this.As previously mentioned,there are benefits to both low-carb intakes and to high-carb intakes.When carb intake is drastically reduced you create a temporarilygreater caloric deficit. In addition, low-carb intakes result indecreased levels of circulating insulin, increased levels of thefat-burning catecholamines and therefore a much heightened rate of fatoxidation. Quite simply, when insulin levels are low, you create anenvironment in which fat is more likely to be used for energy. Lowmuscle glycogen, as a result of decreased carbohydrate intake,obviously results in depleted muscles, but there are benefits to thisas well. Low muscle glycogen tends to promote a higher rate of freefatty acid burning. Result? More fat loss.On the flip sidehowever, most people do not enjoy eating few carbs for very long. Whilethere are clearly benefits to doing so, there are other things thatneed to be considered. Chronic low-carb intake can actually impairinsulin sensitivity and promote insulin resistance. As already noted,low-carb intakes result in overly flat, depleted muscles and gymperformance typically suffers. Throw in a day of high carbs and yourmuscles fill out, you find yourself more vascular, your workouts aregreat, and you look and feel much better. There is also research tosupport the fact that these higher-carb/calorie days may stimulateleptin production, which as we already noted is an important player inthe fat-loss game. Carbohydrates are also very protein sparing –meaning they prevent protein from being oxidized as fuel – which is animportant consideration when muscle retention is a primary focus.Thereare psychological factors to consider as well. How you feel on a dietis arguably just as important to your progress as any other variable.There are not too many people that enjoy looking flat and depleted allthe time. And lets not forget one of the reasons most people canappreciate – carbohydrates simply taste good.So to summarize,we want some days where carbohydrate intake and calories are higher andsome days where carbohydrate intake and calories are lower. Thesimplest way to set this is to just cycle your carbohydrates andcalories according to your weekly training schedule. For example,assuming four workouts per week, you might have your high days on yourtwo big workouts, medium days on your two easier workouts, and low dayson your off days.PRACTICAL STEPS There is no one best way tocycle carbs or calories. In fact, there are many, many differentpermutations that can be used successfully. Here is just one examplethat you could use as a template. Feel free to tweak it to suit yourneeds if necessary.First off is caloric intake. Determine allthe macronutrient totals (protein, carbs, fat, and calories) for themedium day and then just let the carbohydrate intake change thecalories for the high and low days. So, assume the medium day is astandard dieting day. As an aside, but a valuable note to keep in mind,there are many different calorie equations you can use – however beaware that they all have the potential to be off by as much as 20%. Sofor the sake of simplicity you could just assume maintenance to beapproximately 15x total bodyweight and subtract 20-25% to create ahealthy caloric deficit. Remember, if you are not progressing based onyour caloric intake, simply adjust it up or down until progressresumes. Next up is protein. I am sure we are all in agreement that weneed to eat sufficient amounts of protein when trying to lose fat andmaintain muscle, so set it anywhere from 1.0-1.5g/lb of bodyweight andsplit it up evenly throughout the day. You are going to have threecarbohydrate intakes – one for high days, one for medium days, and onefor low days. Carbohydrate intake for the medium days is going to beset at 1.0g/lb of bodyweight. So now we know our calories, our proteinand our carbs. All that remains is to figure out how much fat we're toeat. In this case, fat simply serves as a caloric ballast. Simply makeup the rest of your calories from fat. Your protein and fat intake fromthese days will stay constant throughout all three days. Carb intakefor your high days should be set at 2.0g/lb of bodyweight and finallyfor your low days it is going to be minimal as you're only eatingfibrous vegetables; no starch type carbs at all.Remember thetruth of the matter is that there is no one best method for fat loss.Carbohydrate and calorie cycling is just one logical and effective wayof approaching it. Many who opt for this kind of approach find it veryeasy to follow as you get a few days a week where you get to eat somefun carbs, and like I said, who doesn't like eating carbs?
Ask someone you deem qualified what the best nutritional strategy to maximum fat loss is and you will get one answer. Ask another seemingly qualified individual the same question and chances are you will get a completely different answer. There are a few general constants you can expect to hear; for example, ensuring you are eating adequate amounts of protein and omega-3 fats. There is little argument there. However, the discrepancies arise when the subject of carbohydrate intake come up. Some will say high carbs are best, others say low carbs, and still others recommend something somewhere in the middle. The truth of the matter is that there really is no one best way of approaching fat loss. There are many different approaches that can, and have been, used successfully. The most important elements to successful fat loss are customizing a nutrition strategy to yourself, ensuring it's a plan you will adhere to, and adjusting your program based on your progress. Nutrition is not a cookie-cutter game and what works for one doesn't always work for another. With that said, let's take a closer look at this carbohydrate issue.
Truth be told, there are benefits to having a fair amount of carbs in your diet and there are benefits to keeping them low. So why not use both strategies? Rather than choosing one or the other, why not get the benefits of both by cycling your carbohydrate and caloric intake throughout the week? By cycling your carb intake you get the best of both worlds. Assuming you keep your protein and fat intakes relatively constant, and only manipulate your carb intake, you are automatically cycling calories as well. The first benefit to doing so is that it keeps your body from adapting to what you are doing. Your body will always try to adapt to what you're doing and the leaner you get, and the more you take your body away from its set point, the more your body will try to adjust its regulatory processes to halt your progress. This is just in part related to the regulatory hormone, leptin.
Leptin levels are related to things like insulin, your caloric intake and your current level of body fat. Think of it as one of the big “fat-loss decision makers”. The leaner you are the lower your circulating levels of leptin are going to be. Under more normal circumstances, higher body fat, maintenance caloric intake, etc., leptin levels are higher. However, while on sub-maintenance calories, and particularly on low-carb diets where circulating insulin levels are low, leptin levels drop and they can drop quickly. Decreased leptin levels cause a cascade of other regulatory changes, namely a decrease in thyroid output and metabolic rate, as well as an increase in catabolic hormone activity and appetite. In an attempt to become more efficient, your body will try to adapt to make your newly lowered caloric intake its new maintenance intake; that is, it will make the necessary changes needed to do the same amount of work on less energy. Unfortunately, this usually means having to continuously lower calories to maintain fat-loss progress, which inevitably makes it very hard to hold onto all your hard-earned muscle. None of this sounds too good does it? There has to be a better way, and there is. Planned and structured days of high calories and high carbohydrates may help with this.
As previously mentioned, there are benefits to both low-carb intakes and to high-carb intakes. When carb intake is drastically reduced you create a temporarily greater caloric deficit. In addition, low-carb intakes result in decreased levels of circulating insulin, increased levels of the fat-burning catecholamines and therefore a much heightened rate of fat oxidation. Quite simply, when insulin levels are low, you create an environment in which fat is more likely to be used for energy. Low muscle glycogen, as a result of decreased carbohydrate intake, obviously results in depleted muscles, but there are benefits to this as well. Low muscle glycogen tends to promote a higher rate of free fatty acid burning. Result? More fat loss.
On the flip side however, most people do not enjoy eating few carbs for very long. While there are clearly benefits to doing so, there are other things that need to be considered. Chronic low-carb intake can actually impair insulin sensitivity and promote insulin resistance. As already noted, low-carb intakes result in overly flat, depleted muscles and gym performance typically suffers. Throw in a day of high carbs and your muscles fill out, you find yourself more vascular, your workouts are great, and you look and feel much better. There is also research to support the fact that these higher-carb/calorie days may stimulate leptin production, which as we already noted is an important player in the fat-loss game. Carbohydrates are also very protein sparing – meaning they prevent protein from being oxidized as fuel – which is of paramount importance when retaining all your hard-earned muscle is a priority.
In addition to the numerous physiological factors, there are psychological variables that need to be taken into consideration as well. How you feel on a diet is arguably just as important to your progress as any other variable. There are not too many people that enjoy looking flat and depleted all the time. And lets not forget one of the reasons most people can appreciate – carbohydrates simply taste good.
So to summarize, we want some days where carbohydrate intake and calories are higher and some days where carbohydrate intake and calories are lower. The simplest way to set this is to just cycle your carbohydrates and calories according to your weekly training schedule. For example, assuming four workouts per week, you might have your high days on your two big workouts, medium days on your two easier workouts, and low days on your off days.
PRACTICAL STEPS There is no one best way to cycle carbs or calories. In fact, there are many, many different permutations that can be used successfully. Here is just one example that you could use as a template. Feel free to tweak it to suit your needs if necessary.
First off is caloric intake. Once you know the caloric total you are striving for, the simplest way to set up all the macros (protein, carbs, fat) for your medium day and then simply adjust carb intake to determine your high and low days. So, assume the medium day is a standard dieting day. As an aside, but a valuable note to keep in mind, there are many different calorie equations you can use – however be aware that they all have the potential to be off by as much as 20%. So for the sake of simplicity you could just assume maintenance to be approximately 15x total bodyweight and subtract 20-25% to create a healthy caloric deficit. Remember, if you are not progressing based on your caloric intake, simply adjust it up or down until progress resumes. Next up is protein. I am sure we are all in agreement that we need to eat sufficient amounts of protein when trying to lose fat and maintain muscle, so set it anywhere from 1.0-1.5g/lb of bodyweight and split it up evenly throughout the day. You are going to have three carbohydrate intakes – one for high days, one for medium days, and one for low days. For your medium days, set your carbohydrate intake to 1.0g/lb of bodyweight. So now we know our calories, our protein and our carbs. All that remains is to figure out how much fat we're to eat. In this case, fat simply serves as a caloric ballast. Simply make up the rest of your calories from fat. Your protein and fat intake from these days will stay constant throughout all three days. On your high carb days, set your carb intake at 2.0g/lb of bodyweight and finally for your low days it is going to be minimal as you're only eating fibrous vegetables; no starch type carbs at all.
Remember the truth of the matter is that there is no one best method for fat loss. Carbohydrate and calorie cycling is just one logical and effective way of approaching it. Many who opt for this kind of approach find it very easy to follow as you get a few days a week where you get to eat some fun carbs, and like I said, who doesn't like eating carbs?
Erik Ledin has sinced written about articles on various topics from Fat Loss, Metabolism. Erik Ledin, B.Kin, CSCS, CISSN, is the President of Lean BodiesConsulting Inc., an online consulting firm that reaches globally andspecializes in physique contest preparation, fat loss, nutrition andoverall physical enhancement. He can be reached at. Erik Ledin's top article generates over 3600 views. to your Favourites.