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Flexible Dieting 101: Everything You Should Know

An Overview of Flexible Dieting :

The days are long gone when eating boiled food was a mandate for achieving your
fitness goals. Flexible dieting has created a revolution in the fitness industry by
simplifying nutrition for fat loss and even muscle building. The core idea of Flexible
dieting is: “No foods are bad. And your body is concerned with the nutrients, not
the source”
1. It is not merely IIFYM (If it fits your macros)
2. Can it yield the same results as a strict diet? – Yes!
3. Is it superior to other diets? – No!
4. What is the best part of flexible dieting? – Adherence
5. Who is it for? – Intermediate to advanced dieters

However, people still doubt the efficacy of flexible dieting and believe a stringent diet
comprised of so-called ‘superfoods’ will always yield superior results. In this article, we’ll
educate you regarding everything you need to know about flexible dieting.

Why ‘Diets’ Fail?

If you have ever followed a stringent diet or know someone who has, you know what
happens in the end: it fails! The failure rates of ‘diets’ is 98% and these are the two
primary reasons for that:

1. Seeking Perfection

Like it or not the word ‘diet’ has a stigma attached to itself: it has to be perfect, else it is
useless. People develop this mentality that when they are dieting, they have to be on
their DIET 100%. And there is no harm with this approach until they are able to stick
with it. The problem is that any slip off, no matter how small, is taken as a complete and
utter failure. Next, the diet is abandoned and the post-diet food binge begins. We have
all either known (or been) the following person: one cookie is eaten in a moment of
weakness, and since the diet has technically failed, the entire bag of cookies is GONE!
Of course, there are individuals for whom a strict diet is necessary like a bodybuilder
dieting for a contest, a model aiming to get a photoshoot done or an athlete trying to cut

down to a specific weight class. For everyone else, seeking perfection means seeking

2. Having a short-term vision

Next reason for the failure of diet is focusing only on the short-term goal. People aim to
lose a lot of fat in a small period of time by following extreme diets and then return back
to their old activity and eating habits. As a result of all the fat also bounces back. If you
wish to get lean and stay lean for the rest of your life, (painful words ahead) you have to
follow your fitness regime for the rest of your life. And this is nearly impossible with a
strict diet. If you can stick to a Keto, Paleo or Intermittent Fasting diet effortlessly there
is no reason to try something else. For everyone else who is having a hard time dieting,
Flexible Dieting can offer a solution.

What is a Flexible Diet?

Flexible dieting is technically not a ‘diet’ wherein you are limited to a specific type of
food like in the case of a Keto or Paleo diet. It is a way of eating where the goal is to
provide proper nourishment to the body without being too anorexic about food. One of
the biggest rewards of flexible dieting is that it promotes a healthy relationship with food
and does not demonize any particular food or macronutrient. As the name suggests this
form of eating can be highly personalized:
1. Dieting for a photoshoot? – Macronutrient accuracy can be increased.
2. Bulking during offseason? – Focus can be shifted towards just getting
adequate protein & calories

Is it effective as a strict diet?

World-renowned coaches like Dr. Eric Helms, Dr. Layne Norton, Dr. Mike Israetel
promote flexible dieting, yet people doubt its effectiveness and wish to complicate
nutrition. Even the current Mr. Olympia, Shawn Rhoden is an advocate of flexible
dieting. And why not, as time and time again research has always shown that there are
no magic diets or foods, and the key mechanism behind every diet is- Energy Balance:
If you consume more calories than you burn, you will gain weight (muscle & fat) and if
you consume fewer calories than you burn, you will lose weight (muscle & fat).  By
optimizing nutrition, training, and supplements fat gain during muscle building and
muscle loss during cutting can be minimized. Flexible dieting is simply based on this
mechanism of energy balance.
Like mentioned earlier flexible dieting is highly personalized. If your goal is to build
maximum muscle, then your flexible diet will be a lot different from someone who is
merely aiming to lose fat.

Flexible Dieting is not IIFYM! (if it fits your

People often consider Flexible dieting and IIFYM as the same thing which is a big
misconception. IIFYM is an eating style that focuses solely on hitting the macronutrient
goals, it is a great strategy but it requires a certain level of nutrition experience and
mental effort (if you are randomly eating foods, you constantly need to do macro
calculations). This can result in inaccuracy and a lot of mental fatigue for beginner
dieters. IIFYM is a type of Flexible diet. Whereas flexible dieting works on a spectrum
with something for everyone based on their goal and nutrition experience.   

Types of Flexible Diet Strategies

1. Ad Libitum

Ad libitum is Latin for “at one’s pleasure” or “as you desire” In nutrition, this means free
feeding with no restriction on amount or type of food. This way of eating is for absolute
beginners who desire to make a healthy shift in their lifestyle. It puts no constraint on
eating Hence it is completely suitable for novice dieter. A person can continue his/her
current eating habits and make minute changes as per their goals.
For example, if your goal is to lose fat you can continue with what you are eating
currently and simply replace your one meal with a salad. On the other hand, if your goal
is to gain weight you can add 1 additional meal consisting of some calorie-dense foods
like cheese or nuts or even a serving of mass gainer.

2. Calories Counting

Once decent dietary awareness is achieved, calorie counting can be introduced. This
method incorporates the foundation of every diet i.e. ‘Energy Balance’. If you consume
more calories than you burn, you will gain weight (muscle & fat) and if you consume
fewer calories than you burn, you will lose weight (muscle & fat). It does not put any
constraint on the type of food in the diet and macronutrient profile, the total amount of
calories consumed throughout the day is what matters.
It is suitable for beginners and intermediates whose primary goals are either weight loss
or weight gain. Note: these two goals are different from fat loss or muscle gain. Calorie
counting is favorable for people trying to get lean. Because when people talk about
increasing weight they desire most of it be muscle weight, for which the next method is
more suitable.

3. Protein & Calorie Counting

This method is for people who wish to achieve a more muscular physique. The goal
here is to get adequate protein and enough calories as per your goal. If you wish to
maximize your strength and muscular potential 2.2 to even 2.5 grams of protein per Kg

body is advisable. The higher end of protein intake is recommended during a fat loss
phase. Carbohydrates and fats can be adjusted as per.

4. IIFYM Classic

IIFYM aka ‘If It Fits Your Macros’ is perhaps the most popular flexible diet strategy in the
world. Major credits for the popularity go to Fitness YouTubers and influencers. IIFYM
puts a constraint on daily macronutrient intake but not the type of food one eats. It
allows a person to achieve high levels of fitness goals without compromising on taste.
Suppose on an IIFYM diet a person aims to consume 200g Protein, 250g
Carbohydrates and 80g Fats per day, and by the end of the day, he/she has only eaten
50g  Carbs, remaining 200g can be compensated eating rice, oats, pizza, chocolates or
shakes as per person’s desire. IIFYM is surely worth giving a try but it does have the
following limitation:
 Lack of micro & phytonutrients: Since IIFYM primarily focuses on
macronutrients, there is a risk of missing out on key micronutrients due to poor
food choices. A hundred grams of rice and a pack of chocolates might have
the same macronutrient profiles but there a huge difference in micronutrients
and fiber content.
 Inaccuracy: This is an extremely common problem people face trying IIFYM
i.e. error in calculating macronutrients. People frequently complain of not
losing weight despite being on a caloric deficit, the truth is: they are actually
not in a deficit and simply miscalculating macros.
 Mental Fatigue: As there is a lot of random food consumption on an IIFYM
diet, there is a lot of calculation required. This task irrespective of nutrition
experience adds up to a lot of mental stress.

5. IIFYM (Alpha)

This is how I recommend my clients to eat, it is how they achieve results and are able to
maintain it for lifelong. We take advantage of flexibility in IIFYM, yet add a little structure
to the overall diet to increase accuracy and reduce mental fatigue. Firstly, we make sure
there are some fixed meals like a serving or two of fruits for micronutrients and a
serving or two of nuts for healthy fats. Next, instead of solely focusing on daily macros,
we aim to hit macros per meal, keeping it possibly as similar as planned.
For example, if a person has 70g carbs in lunch for which he is supposed to eat 10o
gram rice, he can replace that with some other food item having a similar macronutrient
profile like 3 rotis, 4 slices of bread and even a burger. This strategy works far better
than regular IIFYM.
I hope you learned something valuable from this article, for quality and authentic
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