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Getting back to training after a break: how to return without injury or frustration

CrossFit Wilanów

You remember your squat from three years ago. You also remember the mirror from back then. Then came a new job, a baby, a move to another country or an injury, and the membership card stopped being used. Now you want to come back, but you are embarrassed that it will be weak, and you are afraid that on day one you will reach for your old weight and hurt yourself. Both fears are reasonable. Here is what is known about coming back, and how we set it up at our box.

What you lose, and how fast

Mujika and Padilla (2000) reviewed studies of what happens to the body after a break from training longer than 4 weeks. The answer differs from one quality to the next:

  • Aerobic fitness drops noticeably. In people who have trained for years it stays above the level of people who never trained, but recent gains disappear completely. Part of the reason is a lower blood volume and a heart that works less efficiently under effort.
  • Strength goes slowly and stays above the level of people who never trained for a very long time. What shrinks is the cross-section of the muscle fibres.
  • Glycogen stores in the muscles drop back to baseline, so your first hard sessions after a break tire you faster than you remember.

The practical conclusion: after a break, strength comes back fastest and breathing takes longest. So at first the problem is not the weight, it is the pace.

Muscle memory, honestly

“Muscles remember” is something you hear in every gym. There is a lot of truth in it, but it helps to know where it comes from.

Bruusgaard and colleagues (2010) showed in mice that a muscle that grew under load gains new cell nuclei, and that these nuclei are not lost when the muscle later wastes. They stay in the cell and make regrowth easier. That is an animal study, so we do not carry it straight over to people.

Seaborne and colleagues (2018) looked at it in humans, at the level of genes. Participants did strength training, stopped long enough for their muscle mass to return to where it started, and then trained again. After the second cycle the gain in muscle mass was larger than after the first, and some of the changes in gene regulation lasted through the whole break. The authors call this an epigenetic memory of muscle.

What this means for you: if you have years of training behind you, you will get your fitness back faster than someone starting from zero. It does not mean you will get it back in a week, and it does not mean your tendons and joints remember as much as your muscles do. They need time that muscle memory does not shorten.

The biggest risk is your ego

Someone who has never trained has no idea how much they can lift, so they listen to the coach. Someone coming back knows what they used to lift, and that is the problem. Muscles catch up with the old weight fairly quickly. Tendons, ligaments and a technique that has had three years to get rusty do not.

CrossFit’s Level 1 Training Guide sets one order for everyone: mechanics first, then consistency, and only then intensity. When you return, that order applies just as it did on your first day, even though you already know the movements. The guide recommends scaling workouts significantly for at least a month, and coaches are told to err on the side of scaling too much rather than not enough. If you leave your first class back feeling you could have done more, it went well.

Your first 4 weeks: a checklist

  1. If the break was because of an injury, an illness or surgery, see a doctor or physiotherapist first. The coach does not treat or diagnose. What the coach can do is build your training around limits they know about.
  2. Arrive 15 minutes early and say how long you have been away and what hurts. Be precise. “Three years off, five years of strength training before that, knee surgery in 2024” is the sentence the coach needs.
  3. Week one: 2 classes, in the Beginners version. Yes, even if your version used to be RX. Let your body remember the movement without the weight.
  4. Weeks two and three: 2-3 classes, Beginners or Intermediate, depending on what the coach sees in the warm-up, not on what you remember.
  5. Week four: 3 classes. Log your results in the SugarWOD app, because from now on you compare yourself with yourself a month ago, not three years ago.
  6. Do not compare yourself with your old numbers. Put the old training log in a drawer for a quarter.
  7. Sleep. After a break, soreness is stronger and recovery is slower. If pain is sharp or different from tired muscles, tell the coach straight away.
  8. After 4 weeks, talk to the coach about the next step. Only then do the weights start to go up in a way you will notice.

Coming back after having a baby

This is its own subject, and we do not pretend to cover it in one paragraph. The American College of Obstetricians and Gynecologists (ACOG Committee Opinion 804, 2020) says you can return to exercise gradually after giving birth, as soon as your health allows, and that the pace depends on the birth and any complications. The WHO 2020 guidelines include, for the first time, separate recommendations for pregnant and postpartum women: regular activity, including strengthening exercise, is recommended where there are no contraindications.

At our box it works like this: first your doctor, and if you have any doubts about your pelvic floor, a women’s health physiotherapist. Then a conversation with the coach before your first class. If you would rather start more quietly than in a group, you can come back through personal training, one to one, and join classes when it feels right.

Two ways back at our box

Group classes. You come to a class, the coach picks your version of each exercise after talking to you about the break and any injuries, and with at most 12 people in the room the coach can see you for the whole hour. If you want to ask first, message us on WhatsApp: “coming back after a break” and a few lines about how long is enough. Classes are in Polish, and if anyone in the room does not speak Polish, the coach runs the class in English.

One to one. If the break was long or involves an injury, start with personal training: a free phone call, then a few sessions with one coach, then the group. It is the same road, with more attention at the start.

One thing is the same either way: your first class back should be lighter than you think it should be. That is the plan, not a punishment.

Start with one class. Answers to the most common questions are in the FAQ.

Sources

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