September is the month gyms fill up again. It's also the month with the most grumbling shoulders, stiff lower backs and people who give up in the third week. That's no coincidence: most people go back to training exactly where they left off, with July's loads and July's mindset, in a body that has spent six weeks on the beach.
This article is for you if you stopped over the summer and want to come back. You'll understand what you really lose during a break, what you lose much less of than you think, and you'll get a four-week plan to get back to your old pace without a trip to the physio halfway through.
What you really lose when you stop for a month
The first thing to understand is that you don't lose everything at once. The body undoes its adaptations in order, and that order is fairly consistent in the research on detraining.
Cardiovascular fitness is the first to drop
It's the most fragile of all. In well-trained people, aerobic capacity starts to drop within the first two weeks off, and after a month the decline sits somewhere between 4 and 14 per cent, depending on the study and the starting level. In runners, the most commonly cited figures are around 6 per cent at four weeks. People who had only been training for a short time lose less, simply because they had less built up.
In terms of what you feel in class: the same workout you did in June feels faster, your heart rate climbs more quickly and you take longer to recover between sets. It's not a lack of willpower, it's blood volume and capillary density.
Strength holds up much better than you think
Here's the good news, and it's the part most people don't know. Maximum strength stays almost intact for three to four weeks without training. Only after that does it start to drop, and even then slowly. Muscle mass starts to decrease a little earlier, at around two to three weeks, but in small amounts.
The problem is that the strength still on paper doesn't come with the tolerance that supported it. Tendons, ligaments and connective tissue adapt more slowly than muscle, both on the way up and on the way down. You can lift almost the same, but your body is no longer ready to do it three times a week. That's exactly where September injuries come from.
| What you trained | 2 weeks | 4 weeks | 8 weeks |
|---|---|---|---|
| Aerobic capacity | Already dropping | Drops 4 to 14 % | Sharp drop |
| Maximum strength | Intact | Almost all the way there | Starts to drop |
| Muscle mass | Slight loss | Small loss | Visible loss |
| Coordination | No changes | Stiffer | Rusty |
| Tendons | Already declining | Much reduced | Very low |
The last row of that table is the one that matters. It's the one nobody feels and the one that gets you.
The classic September mistake
The mistake always looks the same. Someone walks into their first class, does the warm-up, looks at the board, sees the weight they used before the holidays and puts exactly that weight on the bar. They manage it. They finish the workout happy. The next day they have muscle soreness that lasts four days, miss the next class, come back the following week with half the enthusiasm, and a month later they've stopped coming.
None of this was down to a lack of strength. It was from using all the strength you still had in a body that has lost the ability to recover from effort. Delayed onset muscle soreness after a break is normal and not dangerous, but when it is brutal it steals your next workouts, and those are the ones that build the habit.
The practical rule is simple: in the first few weeks, the goal is not to see what you can still do. It is to rack up sessions.
The 4-week plan to get back
This isn't a plan to win anything. It's a plan to get you to October training the way you trained in June, in one piece and still keen.
| Week | Sessions | Load | How you should leave the class |
|---|---|---|---|
| 1 | 2 | 50 to 60 % | With the clear feeling that you had more in the tank |
| 2 | 3 | 60 to 70 % | Tired, but able to do it again the next day |
| 3 | 3 | 70 to 85 % | How you used to leave on a normal day |
| 4 | 3 to 4 | Close to usual | How you used to leave on a good day |
Week 1. Two sessions, with at least two days between them. Half the load. Do the full movement, without cutting range, and stop each set with two or three reps still in the tank. You'll find it ridiculously easy. That's the point.
Week 2. Move up to three sessions. Increase the load a little and keep the same discipline of finishing your sets before failure. This is the week most people get carried away and blow the plan, because the body has already responded and the mind thinks it's all sorted. It isn't: your tendons are two weeks behind your muscles.
Week 3. You can start looking for intensity in the conditioning again and get closer to your old loads on the lifts. Stick with three sessions. If any joint pain showed up the week before, stay at the week 2 loads and don't move up.
Week 4. Normal pace. Three to four sessions, usual loads, and from here on you're simply training again.
If you were training four or five times a week before your holidays, resist jumping straight back to that in week 4. Add one session a week, not three at once. We wrote about the frequency that makes sense for each person in the article on how many times a week you should train.
What changes in the first classes
Three things matter more than any detail of the plan.
Warm up for longer than you used to. After a break, ten minutes of warm-up isn't time wasted, it's the difference between a good class and a strain. Work on your hip and shoulder mobility before you pick up any weight. If you don't know where to start, the article on joint mobility and range of motion covers the essentials.
Tell the coach you've been away. It sounds obvious and hardly anyone does it. A coach who knows you've been out for six weeks adjusts your load on the spot, no discussion and without leaving you on autopilot. At Revolution there's always a coach in every class, and that's exactly what they're there for.
Get back to eating like someone who trains. In August mealtimes fall apart, and then you wonder why you're so tired at five in the afternoon. You don't need anything complicated, you need to eat something before training and not let two hours go by without eating afterwards. It's all in the article on what to eat before and after training.
Signs you're coming back too fast
- Joint pain, not muscle pain, that appears during the movement and doesn't go away after warming up
- Muscle soreness lasting more than three days in a row
- Worse sleep on the nights after training
- Resting heart rate clearly higher than your normal for several days
- Losing the will to go, in the second or third week
The last two are the most ignored and the most reliable. If they show up, drop one session that week and go back to the previous load. Nobody ever lost their fitness because of one lighter week.
Frequently asked questions
How long will it take me to get back the fitness I had?
For a break of four to six weeks, expect four to six weeks to get back to where you were. Recovery is always faster than the initial build, because the adaptations haven't disappeared, they've gone dormant.
Is it worth waiting until October to start properly?
No. Every extra week off is another week of piling up losses and putting off the habit. Two light sessions this week are worth more than a perfect plan a month from now.
Do I need to do strength tests before starting again?
Not in the first two weeks. Testing maxes with out-of-practice tendons is one of the worst ideas of September. From week 3 onwards it makes sense to find out where you stand.
What if I never really trained properly?
So this isn't a comeback, it's a beginning, and beginning is simpler than it looks. You'll find the way in the article on how to build a training routine.
I'm over 50. Does the plan change?
The logic is the same, but the margin is smaller: muscle loss during the break is faster and tissue recovery takes longer. Stretch each phase by a few more days instead of shortening the plan. We wrote about this in training after 50.
Where to get back into training in Figueira da Foz
At Revolution, in Buarcos, every class has a coach with you and the groups are small, which means someone notices when you're overloading the bar in your first week back. You can return through CrossFit, if that's where you came from, through HYROX if your goal is a race, or through Longevity, which is the right way in if your break was long or you're carrying niggles. The full class schedule is in the timetable.
The first class is free and you don't need any experience. Just turn up, tell us how long you've been out of training, and we'll take care of the rest. If you'd rather talk first, get in touch and we'll tell you which class makes most sense to start with.
You don't need to be fit to come back. That's what coming back is for.
Came back in September and want it to last? The clocks change next. Here's what to do in training in winter without letting your routine slip.
