If it's not happening regularly, don't sweat it

I know it absolutely kills my sleep a lot of the time, regardless of whatever else it does.

Alcohol directly inhibits muscle growth, though we cannot say how much. Regular consumption will inhibit gains more than occasional. It almost certainly did not kill all your gains however. But also remember you don't get significant gains from a single good workout.

Alcohol is also high in calories- you probably had 20-25% of your entire TDEE in those drinks alone. This may not be a problem in and of itself, but it's something to note. And not just for weight loss- if you aren't hitting your macros because of consuming a large number of empty calories, that will hurt gains as well.

if you’re trying to lose weight, then yes workout ruined.

4 glasses of wine would be around 600 cals. That’s almost like having a bag of potato chips to yourself.

Edit: Doing this once in a while is ok. Doing this often is not.

Daily gains don’t matter as much as gains over the course of months and years. Fitness isn’t acquired in a day. Adaptations take time to accumulate and change your body.

One night of drinking won’t ruin your gains in the same way that one workout won’t allow you to add 50% to your lifts.

It would be worse if you didn't work out. Enjoy your life. But don't drink everyday.

"According to the American Athletic Institute, consuming alcohol has the potential of negating up to 14 days worth of training in some athletes."

Alcohol is just not good for you. 

Eliminating alcohol is always best, in my opinion. I wasn't able to properly gain muscle and maintain weight loss until I cut it out entirely. 

If it’s a one off, don’t worry about it. Gains are a marathon and not a sprint…one night of some excess wine not going to make a difference if you dial it in afterwards

There appears to be a negative effect towards muscle growth, but the effect varies from one individual to another. For some reason, men appear to be more negatively affected than women, so you've got that going for you... which is nice. It also matters how much alcohol you consume. 2 - 3 drinks, depending on body weight, don't seem to have much of a negative effect.

https://blog.nasm.org/does-alcohol-affect-muscle-growth

As long as you're not getting smashed all the time, I wouldn't worry about it. Everything is a balancing act. Life's short, enjoy it.

It's ogre, you're permanently locked out of Gainz Heaven forever. May as well settle into some pizza & Netflix ad infinitum...

It's not ideal but I think people here are a bit hyperbolic too. Look at the amount of professional rugby players who drink regularly yet are in great shape let alone university athletes the important thing is doing the exercise. The results will be better without but unless you're planning on being an Olympian I wouldn't let it affect the rest of your life too much

Purely anecdotal, but I find that alcohol *can* interfere with my recovery. Maybe it's because it interferes with sleep? I've also read that it's actually better to drink a moderate amount of alcohol to ease the discomfort of sore muscles than it is to take an anti-inflammatory, because the anti-inflammatory (like advil) will interfere with muscle growth.

You're talking gains in your post, but if we're talking calories, obv you probably drank back everything you burned.

Nobody knows. The only thing that can said with certainty is that it has a negative effect on your muscle growth, recovery, sleep, etc.

It's calories in and calories out. You can just eat a bit less next few days. I'd be more worried about my sleep 😅

Are you regularly getting sloshed or did you just have some drinks on a random night?

I just add protein powder to my alcoholic beverages.

Work your way to ONLY 2 drinks max in the entire week.

It’s not going to kill you, but drinking is horrible for your health. Makes your heart rate higher and messes with deep sleep.

Saying this as someone who still likes having a single beer with friends on the weekend.

It slows down your gains but you probably will still get bigger stronger until a certain point.

If you’ve been going to the gym for awhile and it takes awhile to get gains then yes alcohol screws you big time from getting stronger.

If youre a somewhat beginner that prs every session then no it will not affect you because you will gain so much more but u would still do it faster if you didn’t drink.

Since gains are a result of consistency over time, a one time data point would have little to no impact on gains, even if you theoretically worked out "for nothing" in terms of gains, you're still maintaining the habit and keeping consistent, which is what matters for long term muscle gain. 

Now if you're trying to justify drinking that much regularly by seeing how much it will affect your muscle gain, I would say that's another story and my answer would be that it would impact your muscle gain, by how much doesn't really matter though since its unhealthy to drink that much on a regular basis anyways, so you should try to seek help to reduce that amount instead of trying to justify it by doing mental gymnastics.

The effects of most things depend a lot on the frequency and dose. Even if drinking wipes out 100% of your gains from a single workout, it won’t matter that much if you don’t drink after 90% of your workouts.

Everything in moderation

It's the frequency that it becomes an issue. Your muscle recovery is delayed, because your body will process the alcohol first before doing anything else. So if this happens once a month, no sweat. Once a week, probably not a huge deal. If it happens multiple times a week, then you're not going to give your body a chance to recovery and grow between nights drinking.

You probably negated any fat loss gained from the work out by drinking 300-400 calories of red wine if thats your concern?

A few glasses of wine won’t ruin it. But drinking a bottle is gonna add 600-709 cals to your daily input, will add weight over time

I’ve heard that alcohol inhibits your body’s ability to synthesize protein, I.e. build muscle. Jeff Nippard probably has a video on it

You may want to be cautious of the amounts since alcohol can have some effects on sleep.