Should You Start Working Out Now or After New Year's?

You decided to get in shape sometime around now. Then you looked at the calendar, saw the holidays coming, and moved your start date to January 1st.

That feels like the smart call. New year, clean slate, no holiday food wrecking week two.

For almost everyone, it's the wrong call. Starting to work out now beats waiting until after New Year's, and the reasons are more concrete than "just do it."

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Should you wait until January to start working out?

No. Start now. A New Year's reset does make people more likely to begin, but waiting for it costs you 12 to 13 weeks of the fastest progress you'll ever make, a holiday season of weight gain you probably won't lose, and a January start in the most crowded month of the gym year.

There is one honest case for January. Fresh starts are real. People are more likely to go after a goal at the start of a new week, month, or year, and we broke down that research in why you keep starting over every Monday.

The New Year is the most obvious of those landmarks. It isn't the only one. The first of the month and the start of a week trigger the same effect on a smaller scale.

October 1st is a fresh start too. So is next Monday.

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How much progress do you give up by waiting until January?

Start in early October and you'll have 12 to 13 weeks of training done by January 1st. That's the stretch where beginners improve fastest. In one 12-week study of 585 men and women new to lifting, one-rep-max strength in the trained arm rose about 54% on average and biceps size about 19% ¹.

Those numbers come from one muscle group, and results varied widely. Some people didn't grow at all, and a few lost a little size. Others more than doubled their strength.

The direction holds for everyone. Your first few months of lifting are the fastest you will ever progress. You learn the lifts, your body gets better at using the muscle you already have, and the weights climb almost every week. We mapped out those weeks in the first 90 days of building muscle.

Every week you push the start date back is one more week of the easiest progress in lifting that you skip.

Waiting also means January 1st arrives with no habit built. Most people need a couple of months of repetition before training feels automatic, which we covered in why you keep quitting at week 3.

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Why do New Year's gym resolutions fall apart by February?

January starts are set up to break. People jump from zero to five or six sessions a week, train in the busiest month of the gym year, and start right after weeks of holiday eating and short sleep. That combination burns people out fast.

You've probably seen the claim that 80% of resolutions fail by February. It gets repeated everywhere and almost never comes with a source.

The research is less grim. One study followed New Year's resolvers for six months. About 71% were still on track after two weeks and 46% at six months. People who wanted to change but didn't make a resolution did far worse: only 4% had kept it up at six months ².

That was a small sample of about 280 people, all self-reported, so treat the exact numbers loosely. The takeaway still holds: deciding to change works. The January conditions are what trip people up.

• Too much, too fast. Five or six sessions a week from a standing start leaves you sore, tired, and behind schedule by week three.
• Packed gyms. Waiting on racks is annoying for regulars and brutal for beginners who already feel out of place. If that's you, read how to deal with gym anxiety as a beginner.
• The post-holiday hole. You start January heavier, more tired, and further from a routine than you were in the fall.

Start in the fall and you skip all three. You're already training when the crowd shows up.

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Is there a best time of year to start working out?

No season builds muscle better than another. The best time of year to start working out is whichever month gives you the most runway before life gets busy. For most people, that's early fall: summer travel is over, schedules have settled, and there are still 12 to 13 weeks until January.

Your body doesn't know what month it is. Muscle responds to training, food, and sleep.

The calendar does affect friction. Summer brings vacations. December brings parties and short days. January brings crowds.

Early fall is one of the quieter stretches of the gym year. That makes it the easiest time to learn the lifts and lock in a schedule.

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Is it worth starting the gym right before the holidays?

Yes. The holidays are when a big chunk of a year's weight gain happens. One study found the average adult gained under a pound between Thanksgiving and New Year's, most of their gain for the whole year, and a year later it hadn't come off ³. Start before the holidays and you hit that stretch already training.

Under a pound sounds like nothing. The catch is that it doesn't come off. Repeat that every December and it adds up over the years.

Starting now also changes what the holidays mean for you. January starters spend the first month trying to undo December. Fall starters walk into December already training, so the holidays become something to work around.

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How do you keep training through the holidays once you start?

Cut volume before you cut sessions. Keep the training days you can protect, shorten workouts on busy weeks to your main lifts, and plan sessions around parties and travel ahead of time. A shorter week keeps the habit alive. A missed week with no plan is how people end up restarting in January anyway.

• Book it like a meeting. Look at your week on Sunday and put sessions where the parties aren't.
• Keep a minimum session. On a bad day, do your two main lifts and leave. Thirty minutes counts.
• Travel with a backup. A hotel gym or a dumbbell session keeps you training while you're away.
• Treat one miss as one miss. A skipped session costs almost nothing. The spiral after it costs you the habit. Here's how to get back on track after a missed week.

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Start working out before New Year's with a plan that fits your schedule

Waiting for January feels like planning. In practice, it hands three months of your fastest progress to a date on the calendar.

The real reason most people wait is that the next three months feel impossible to plan around. Parties, travel, short days, and a schedule that changes every week.

That's what a J2J plan is built for. It's built around your stats, your goals, your equipment, and the days you can actually train. Progression is mapped from day one, and deloads are built in.

Pick a day this week and start there. By January 1st, you'll be months in while everyone else is on day one.

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References

Footnotes

1. Hubal, M. J., Gordish-Dressman, H., Thompson, P. D., Price, T. B., Hoffman, E. P., Angelopoulos, T. J., Gordon, P. M., Moyna, N. M., Pescatello, L. S., Visich, P. S., Zoeller, R. F., Seip, R. L., & Clarkson, P. M. (2005). Variability in muscle size and strength gain after unilateral resistance training. Medicine & Science in Sports & Exercise, 37(6), 964–972. https://pubmed.ncbi.nlm.nih.gov/15947721/ ↩

2. Norcross, J. C., Mrykalo, M. S., & Blagys, M. D. (2002). Auld lang syne: Success predictors, change processes, and self-reported outcomes of New Year's resolvers and nonresolvers. Journal of Clinical Psychology, 58(4), 397–405. https://doi.org/10.1002/jclp.1151 ↩

3. Yanovski, J. A., Yanovski, S. Z., Sovik, K. N., Nguyen, T. T., O'Neil, P. M., & Sebring, N. G. (2000). A prospective study of holiday weight gain. New England Journal of Medicine, 342(12), 861–867. https://doi.org/10.1056/NEJM200003233421206 ↩