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Can You Take Mass Gainer Without Working Out? (Is It Safe?)

If you’re wondering whether you can take mass gainer without working out, then you’ve come to the right place.

In this article, we cover what happens when you take mass gainer without working out, whether you can use mass gainer as a meal replacement, and more!

Can You Take Mass Gainer Without Working Out?

If you consume mass gainer supplements without working out regularly, you are more likely to gain fat, rather than muscle. So, you should ideally take mass gainer alongside an exercise program to prevent unwanted fat gain.

man holding a mass gainer shake

What Happens If You Take Mass Gainer Without Working Out?

You’re More Likely To Gain Weight

It goes without saying that the main goal of taking mass gainer is to gain weight.

Now, in order to gain weight, you need to be in a calorie surplus. This means that you need to be consuming more calories than you’re burning.

[Calorie Surplus: Calories In > Calories Out]

By taking mass gainer without working out, you’re going to be consuming a ton of calories, without burning many.

(Since working out burns calories…)

As a result, you’ll gain MORE weight than if you took mass gainer whilst working out.

You’ll Save A Lot Of Time

A common problem I hear from hard gainers is that they don’t have the time to prepare and eat 5 heavy meals a day.

And I get that.

Well, the great news is that many mass gainers contain well over 1000 calories.

So if you’re aiming for 3000 calories a day, rather than eating 5 large meals, you can eat 3 big meals and have a mass gainer shake. This way, you can achieve your calorie intake without spending hours upon hours in the kitchen.

You’re Unlikely To Gain Much Muscle

Unless you’re a genetic freak, you’re very unlikely to build muscle without working out.

Even if you take mass gainer.


Well, to build muscle, you need to give your muscles a reason to grow. And the only way to do this is to exercise your muscles to the point of fatigue.

So regardless of whether you take mass gainer, your muscles simply won’t grow if they’re not being exercised.

(Muscles are metabolically inefficient as they require a lot of calories. Since calories were scarce ‘back in the day’, your body will do everything it can to avoid gaining muscle.)

You’re More Likely To Gain Fat

As covered earlier, you WILL gain weight if you’re in a calorie surplus.

That’s a fact.

But what type of weight will you gain?

Well, mass gainers are high in carbohydrates, so you will gain a lot of water weight in order to store glycogen.

(Glycogen is chains of carbohydrates stored in your muscles, and it’s your muscles preferred fuel source when exercising. Glycogen is held together by water, so when you fill up your glycogen stores, you gain a lot of water weight.)

Once your glycogen stores are full, the rest of the weight gained will likely be fat. This is because you’re not working out, so none of the calories are needed to fuel muscle growth.

So be warned – mass gainer will make you fat if you eat a lot of calories and avoid exercise.

Can You Use Mass Gainer As A Meal Replacement?


As touched upon earlier, mass gainer is an efficient way to consume a meal’s worth of calories if you’re short on time.

(Who isn’t?)

And with it being high in protein and carbs, it covers 2 of your macros.

That said, you typically won’t find many vitamins and minerals in mass gainer, so it is important to eat plenty of fruit and veg in your other meals so that you’re not deficient in anything.

Is It Safe To Take Mass Gainer If You Don’t Work Out?

A road with the words Safety First painted on in yellow paint next to double yellow lines

Mass gainer is a safe supplement regardless of whether you work out.

But if it’s making you fat, then you should probably stop taking mass gainer to reduce the risk of serious diseases, like diabetes and heart disease.

Does Mass Gainer Work Without Working Out?

If you’re taking mass gainer to gain weight, then you’re even more likely to gain weight if you take it without working out.

So from that perspective, mass gainer definitely works even if you don’t work out.

However, if you’re taking mass gainer to build big muscles, then you’re unlikely to build muscle if you don’t work out, regardless of whether you take mass gainer.

So ultimately, it depends on what your goal is from taking mass gainer.

Should You Take Mass Gainer Without Working Out?

The answer to this one depends on your goals.

If you’re super skinny, and you just want to gain weight (regardless of whether it’s muscle or fat), then you should definitely take mass gainer.

Whereas if you want to gain as much muscle as possible, you should only take mass gainer if you work out.

Can You Take Mass Gainer Every Day Without Working Out?

There’s nothing wrong with taking mass gainer every day without working out.

But I personally wouldn’t for 2 reasons:

If you’re stick thin, then you probably don’t care about gaining fat and it might be a good thing for you.

But if you’re a normal weight like most people, then your money would be better spent elsewhere.

Can You Take Serious Mass Without Working Out?

Of course!

There’s nothing wrong with taking Serious Mass without working out.

You just need to keep in mind that it may lead to unwanted weight gain.

That said, it may be a convenient way to get a decent amount of calories down you in a short space of time.


In summary:

  • You can take mass gainer without working out, although you’re unlikely to gain any muscle.
  • Mass gainer can make a great meal replacement if you’re short on time and need to consume a lot of calories.
  • You should only take mass gainer without working out if you’re a hard-gainer who’s trying to gain weight.

That’s all for this article, but how many times should you take mass gainer a day? Or perhaps you’re wondering why mass gainer makes you feel sick?

Hope this helped!


Calorie Surplus Causes Weight Gain


Saturday 3rd of December 2022

Can I take 3 serious mass shakes in one go like drink 1 den another one den another and den eat will I gain any weight?


Monday 5th of December 2022

I wouldn't recommend this Lomz as it's too many calories at one time, so you may feel sick.


Tuesday 16th of August 2022

Thanks for the wonderful explanation sir.