It's Sunday. Clocks fell back an hour last night, and the dark, cold months are officially here. This week's deep dive is a simple plan for training through winter, so you come out of it stronger than you went in.
Last week's deep dive: 20-Minute Relationship Upgrade
DEEP DIVE
Train Like Rocky
In Rocky IV, Ivan Drago trains in a high-tech gym, wired to monitors. Rocky trains in a barn. He chops trees, saws wood and climbs a mountain in knee-deep snow.
None of it was shot in Siberia. The montage was filmed around Jackson Hole, Wyoming, with the Tetons in the background. Night temperatures during the winter shoot dipped to 10 below zero, and Stallone ran up a frozen mountain at 11,000 feet while the crew filmed from a helicopter.
You don't need a barn or a mountain. You need a plan for the three things winter throws at you: the cold, the dark and the holidays.
Why it matters: Winter is when fitness quietly slips. Americans gain about a pound over the holidays, and it tends to stick, adding up year after year. Meanwhile, after 30, you can lose as much as 3% to 5% of your muscle per decade. Most men lose about 30% over a lifetime.
Why now: Clocks fell back last night, and sunset in New York today is 4:52 p.m. Whatever routine worked in October needs a winter version.
The plan:
Lift twice a week, indoors, about 30 minutes each.
Get outside once a week, dressed for it.
Drink on a schedule, before you feel thirsty.
Check your muscle once a month, not just your weight.
More below.
You're Thirstier Than You Feel
How much does cold weather mute your thirst? By up to 40%, according to Robert Kenefick, a University of New Hampshire researcher who studied it.
In the cold, your body works to keep your core warm, and that hides the usual signal that you're running low. Meanwhile, you're still losing water: through your breath in cold, dry air and through sweat under all those layers.
Drink on a schedule: a glass when you wake up, one before you train and one after.
Check the color. Pale yellow is the goal.
For workouts longer than an hour, Mayo Clinic suggests a drink with electrolytes.
TOGETHER WITH VITA COCO
Your Thirst Turns Down in the Cold. Your Sweat Doesn't.
Under three layers, you still sweat. Cold, dry air pulls water out with every breath. Your thirst just stops telling you about it.
That's where Vita Coco Original Coconut Water comes in. It naturally contains electrolytes like potassium, and it's a lighter way to refresh when you come in from the cold:
Before a run, on the dark mornings.
After a workout, while you peel off the layers.
Anytime you've gone too long without a drink.
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Dress for It, Then Go Anyway
Norwegians have a saying: there's no bad weather, only bad clothes.
Warm up twice as long. Cold muscles take longer to loosen up, so Mayo Clinic says to give your warmup twice the usual time and do the moving part before any stretching.
Layer up: a thin base layer that pulls sweat off your skin (skip cotton, which stays wet), something warm like fleece or wool, then a shell that blocks the wind.
Start a little cold. If you're comfortable standing still, you're overdressed. You'll warm up once you get moving.
Cover the ends. Hands, ears and feet get less blood flow than your core, so they chill first.
Check the wind chill, not just the temperature, and take it inside on the brutal days.
Lift Twice a Week
Muscle is the thing worth protecting this winter, and the dose is smaller than most people think. The Mind Pump hosts put numbers on it in an episode we summarized: one strength workout a week gets you about 70% of your muscle-building potential, and two get you about 85%.
The Rocky circuit: 30 minutes, twice a week, in a garage or living room. Do 3 rounds of 8 to 12 reps.
Squat: hold a dumbbell at your chest and sit back.
Push: push-ups, with your hands on a counter if you need to.
Hinge: Romanian deadlifts or kettlebell swings.
Pull: one-arm dumbbell rows, or a resistance band.
Carry: grab two heavy dumbbells and walk for 30 seconds. Rocky hauled logs. You can haul groceries.
The Winter Gear Guide
Ten things that make winter training easier, from the front door to the living room.
To get out the door:
Merino.tech base layer set: a 100% merino wool top and bottom, the first layer of the plan above.
Darn Tough Hiker socks: midweight, cushioned merino wool socks, made in Vermont.
Skechers Cozy Fit (Partner*): quilted, faux-fur-lined and waterproof styles for the dog walk and the school pickup, in wide sizes too.
Black Diamond Spot 400 headlamp: bright, dimmable and powered by AAA batteries, for runs after the 4:52 sunset.
Noxgear Tracer2 vest: a rechargeable, light-up reflective vest, so drivers see you in the dark.
To train inside:
Amazon Basics kettlebell: cast iron with a wide handle, and more than 28,000 ratings. One bell covers the swings, squats and carries in the Rocky circuit.
BowFlex SelectTech 552 dumbbells: one pair dials from 5 to 52.5 pounds and replaces 15 sets of weights.
To track it:
Garmin Instinct 3 AMOLED: our head writer trusts this one. It tracks your workouts, heart rate and sleep, shows today's sunrise and sunset at a glance, and can buzz you before sunset so the outdoor session ends in daylight. There's a built-in flashlight for when it doesn't.
RENPHO MorphoScan Nova Body Composition Analyzer (Partner*): a handle sends the reading through your arms and torso, so it maps fat and muscle across five body zones instead of estimating from your feet alone. It's $199.99 at renpho.com with no subscription, and the 18-month warranty is exclusive to renpho.com purchases.
To beat the dark:
Verilux HappyLight Lucent: a bright 10,000-lux LED lamp, with no UV, for dark winter mornings.
Check Your Muscle, Not Just the Scale
Here's what the bathroom scale misses: a steady number can hide a bad trade, a little less muscle and a little more fat. That's the winter drift.
Three ways to see what's really changing:
A tape measure. UK health officials say to keep your waist under half your height. It takes 30 seconds.
A DEXA scan. A quick, low-dose X-ray that maps fat, muscle and bone. Many clinics and some gyms offer them.
A body-composition scale. The easiest way to check every week at home (our pick is in the gear guide above).
It's worth noting: home scales estimate. Use one for the trend over weeks, not a single morning's reading.
The same goes for losing weight fast. In a small study presented at ENDO 2025, the Endocrine Society's annual meeting, about 40% of the weight people lost on semaglutide (the drug in Ozempic and Wegovy) was lean mass, which includes muscle. Protein and strength training help protect it.
TOGETHER WITH HUMECARE+
A Winter Reset That Tracks Muscle, Not Just Pounds
Most weight programs track one number. HumeCare+, from Hume Health, tracks the two that matter most: fat and muscle.
At-home 3D body composition scans show how your fat mass and muscle mass change during treatment.
An independently licensed clinician reviews every member and builds a personalized plan.
A protocol, not just a prescription: glycine, B12 and B6 are built in, with a 24/7 care team and guidance for what happens when you stop.
More than 20,000 Americans have used it, rated 4.7/5 across 21,479 reviews.
Please support our sponsors!
Beat the Dark
Book it like a meeting. Put two workouts on your calendar for the whole winter: same days, same times.
Take the outdoor session at midday on weekends, the warmest, brightest window of a winter day.
Be seen after 5 p.m. Wear a headlamp or something reflective.
Keep an indoor backup. The Rocky circuit works in a living room.
On the hard days: Johannes Klæbo, the Norwegian skier who won six golds in six events at the Milan Cortina Olympics in February, now holds the record for Winter Olympic golds with 11. Only Michael Phelps has more Olympic golds. Deep in a 50K race, Klæbo tells himself one thing: "Just get over the next hill."▲ Then he picks the next one.
OUR TAKEAWAY
Winter Is Training Season
Rocky didn't wait for spring, and you don't have to either. Two lifts a week, one session outside, water on a schedule and a monthly check on your muscle. Keep that going through February, and you start spring ahead.
GO DEEPER
Mayo Clinic's tips for exercising safely in the cold (Mayo Clinic)
Why we feel less thirsty in the cold (University of New Hampshire)
How to preserve your muscle mass after 30 (Harvard Health)
How Rocky IV turned Wyoming into Siberia (Cowboy State Daily)
*Partners pay to be featured. We may also earn a commission on Amazon links.
