How Your Weekend Drinks Are Wrecking Your Workout Gains!

You’re training Monday to Friday, eating well, ticking all the sensible boxes—then weigh day rolls around and the scale looks like it’s taken early retirement. If that sounds familiar, the missing link may be hiding in plain sight: alcohol and fitness do not play as nicely together as we like to pretend—especially when “a few drinks” turns into a full-blown weekend tradition.

Luke Hughes, a PT at OriGym, says your boozy sessions could be sabotaging your progress and, more importantly, your health. And no, this isn’t a moral lecture delivered from a treadmill—this is just the unromantic mechanics of what alcohol actually does once it’s in your system.

How does alcohol affect our bodies?

Let’s start with the basics. The recommended alcohol limit is 14 units per week—roughly six pints of beer or ten small glasses of wine. And yet, according to Drink Aware, nearly a quarter (23%) of Brits drink over that amount.

So what happens after the “just one” becomes the kind of night where the group chat fills with blurry photos and selective amnesia?

• Your liver can only clear alcohol so fast. It typically takes about an hour for the liver to remove one unit of alcohol. After a heavy session, it struggles to keep up—welcome to the hangover you “earned.”
• Alcohol alters your brain chemistry. It binds to neurotransmitters linked to calmness and sedation—hence the confidence boost and lowered inhibitions. You’re funnier, louder, and absolutely convinced you should message your ex.
• Short-term heavy drinking can be dangerous. If you drink more than 12 units over a short period, you increase the risk of alcohol poisoning, which can interfere with the body’s automatic functions.

In other words: alcohol doesn’t just “add calories.” It changes sleep, decision-making, appetite, recovery, hydration—basically the entire ecosystem that makes training work. That’s the real alcohol and fitness problem.

REVEALED: 5 PT tips to get you back on track after a heavy session

If your weekend went big and your Monday feels like a punishment, Hughes says you can still recover without turning it into a spiral of greasy food, skipped workouts, and guilt-fuelled “double sessions” that end in injury.

1) Drink your water

Hangovers are often dehydration in a cheap suit. Drinking water between alcoholic drinks can reduce dehydration, which is a major culprit behind the nausea, headache and general sense that your body is filing a complaint.

The next day, water helps restore fluids. It won’t magically erase a hangover—but it’s the first sensible move if you care about alcohol and fitness working in the same week.

2) Resist the cravings

When you’re hungover, your body craves salty, fatty foods—and it’s not just lack of willpower. Alcohol encourages the brain to release galanin, a neurochemical associated with appetite for fatty foods.

Instead of surrendering to the takeaway menu, aim for an electrolyte drink plus healthier fats, salts and carbs from fruits and nuts. You’ll replenish what you’ve burned through without detonating your calorie intake.

3) Take a nap

Missing one gym day won’t wreck your goals. What will hurt you is grinding yourself into the floor when your body is clearly under-recovered.

Alcohol reduces rapid eye movement (REM) sleep, because intoxication pushes you into deeper sleep while cutting the REM your brain and body rely on. REM cycles—happening at intervals during the night—support dreaming, memory, emotional processing and healthy brain development.

So if you’re sluggish, a nap can help you recharge. Then, crucially, get a full uninterrupted night’s sleep the following evening to stabilise recovery—because fitness progress is built on what you do when you’re not lifting.

4) Let the drunk you thank the sober you and be prepared

This is less physiology, more damage limitation.

If your usual pre-drinks routine involves turning your bedroom into a clothing landfill and your kitchen into an empty-bottle museum, fix that before you head out. Set yourself up: tidy the room, make the bed, plug in the charger, leave water and paracetamol ready.

It’s not glamorous, but future-you will feel like you’ve been quietly rescued by someone competent—namely, you.

5) Don’t torture yourself in the gym

Yes, exercise can help: it increases oxygen flow to the brain and releases endorphins. A light to moderate workout can boost energy and mood.

But do not confuse “movement” with “punishment.” When hungover, attention, coordination and decision-making can be impaired. That’s not the day for max lifts, sprint intervals, or anything that requires razor-sharp form.

Also: your body is already dehydrated when hungover, so hydration before, during and after is non-negotiable. If you’re serious about your fitness, you need to treat recovery like training—not an optional extra.

What the PT says

Origym‘s Hughes said: “The key to staying on track when on a fitness journey is ensuring you’re informed when it comes to the effect certain foods and drinks can have on your body.

“A night out could seriously hinder your progress, this is because of the excess calories and the effects on the body. If you’re hungover and sluggish you’re a lot more likely to reach for a takeaway and skip the gym.”

The bottom line

You don’t need to live like a monk to make progress—but you do need honesty. If your weekends regularly involve heavy drinking, your body is spending half the week undoing the damage.

Get smarter with hydration, sleep, food choices and training intensity, and you can stop alcohol and fitness from being two goals that constantly fight each other.