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The phrase If It Fits Your Macros (often abbreviated to IIFYM) refers to meeting the individual macronutrient needs relevant to one’s goals and then filling the remaining calories with foods of personal preference. Meaning, eat whatever you want as long as it fits your macros.

What “eat whatever you want as long as it fits your macros” means is basically, eat right, but don’t get all caught up in the whole ‘clean vs dirty’ food debate that seems to still go on. If you want to eat whole grain bread, oats, brown rice, etc. etc. Then do it. If you want to eat white bread, white rice, and pop tarts, as long as it fits in with your other macronutrients and your goals in terms of caloric intake then it isn’t going to make much of a difference in the long run. It all comes down to personal preference.
IIFYM is achieved by following a structured diet similar to the below:
- 200lb man at 20% body fat wants to lose weight
- Maintenance Calories: 3000
- Calories to cut: 2400 - this is a 20% caloric deficit
- 1.5g protein per lb/LBM: (1.5 * 160) 240g
- 0.45g fat per lb/BW: (200 * 0.45) 90g
- Calories from fats + protein minimums: (240 * 4) + (90 * 9) = 1770
- Calories from reaching minimums taken from calories to cut: (2400 - 1770) 630
- He has 630 kcal left to fill with whatever foods he chooses (pop-tarts, pizza, cake, ice cream) and still lose weight as a result of remaining in a calorie deficit.
IIFYM by tsw June 16, 2012
Words you can keep
If It Fits Your Macros (Refers to diet, google macros if you don't know what they are.) Usually used in Forums
OP: So I can eat pop tarts and still get ripped??

Reply: IIFYM.
IIFYM by DaddyD December 18, 2012
Related Words
IIFYM ifym iafym ifymasli ifymb ifymhanl ifymita IFYMLN IFYMLT IFYMUMB
An acronym for "I fucked your mom". Coined by James Ransone as Eddie Kaspbrak in IT Chapter Two, meaning " I love you".
"Richie..."
"What?"
"I fucked your mom (ifym)"
Ifym by Ceiling fan September 12, 2019
i fucked your mom
steph: what you do last night?
me: well first ifym, then i dropped her back on the corner to make my money.
ifym by GFYS August 15, 2006

Iigymhwytiammthmitw 

if i gave you my hand would you take it and make me the happiest man in the world
I like you so much, iigymhwytiammthmitw?
Iigymhwytiammthmitw by aa.k April 25, 2021
- I found your mom under my bed.
Used to break up awkward silences.
ZOMG_LITTLEGIRL_505 (9:05:34PM): yeah you're sexy too.
FAT_FART_99 (9:30:32PM): IFYMUMB
ZOMG_LITTLEGIRL_505 (9:30:50PM): you can find me under there!
IFYMUMB by Allyson July 30, 2008

IIFMTYKIFY 

If its fuck me then you know its fuck you! coined by Leonard Washington
Hey man im sorry i used all of your gas in the car, why won't you drive me anywhere anymore? IIFMTYKIFY
IIFMTYKIFY by the weird wonder January 1, 2009
More from Urban Dictionary
(Ewokese) Freedom!
And dying in yo' bed many years from now, would ya be willing ta trade all da days from dis here day ta dat fo' one chance, just one chance, ta come back here as young men an' tell our enemies dat dey may take our lives but dey will never take our freedom ... YUB NUB!
yub nub by rotjrem November 4, 2010
Word of the Day on September 4, 2026
1. Meaning nasty, sexy, filthy. Popularized by Christina Aguilera.

2. Used usally as a close friend in hip-hop slang.
1. Wanna get dirrty
It's about time that I came to start the party Sweat drippin' over my body
Dancin' gettin' just a little naughty

2. Sup Dirrty? Haven't seen you in a while.
dirrty by Minty November 30, 2003
Word of the Day on September 3, 2026

Coyote Ugly

1. Place

The Bar came before the movie. It is an awesome bar where the girls know how to party and make you feel okay about giving up your money, drawers, bras, and dignity.

2. Movie

A story about a Jersey girl following her dreams, aided by working at this bar in New York.

3. Situation/Person/Decision

See other definitions - waking up next to someone so ugly you'd rather chew your arm off than wake them up.
1. Yo, Coyote Ugly is my favorite bar! I got whipped, stripped, drunk, and danced on the bar all before 7 o'clock!

2. Hey did you see Coyote Ugly? It actually has a plot!

3. Ugg I woke up to Coyote Ugly this morning!
Coyote Ugly by jerseycountry March 8, 2009
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Literally 1984 

Used in response for when someone promotes/advocates an event or idea that is perceived to support "too much" authority and/or government control.

Often used jokingly as a over-exaggeration in political talk.

Can also be used in response to a ban or mute in a forum site or online chat.
Steve: I think that the government should regulate businesses more
Bob: Literally 1984!

--User1 has been permantly banned--
User2: You cant ban my friend like that! Literally 1984!
Literally 1984 by ke1 July 7, 2021
Word of the Day on September 1, 2026

Back when I lived in upstate new york 

A meaningless, unimpressive, self-serving introduction. An indicator that the story about to be shared will be pointless and dumb.
Back when I lived in upstate new york, I also had to park on the street - on two occasions, we got enough snow, mixed with just the right plowing, that my car was lifted off the ground from so much snow being jammed underneath it.
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