Returning to Exercise After Christmas: How to Avoid the Boom–Bust Cycle and Stay Injury
- Laura Fishlock
- Jan 23
- 4 min read
If you’re getting back into running, the gym, or exercise classes after Christmas, you’re in good company. January is full of fresh motivation but it’s also the month we see a predictable pattern in clinic: people who feel ready in their head, but whose body isn’t quite conditioned for the jump.
That’s where the boom–bust cycle comes in.
You do a big session (boom), feel stiff or sore, then back off for a week (bust). Motivation drops, confidence drops, and old injuries start whispering again.
The goal isn’t to avoid effort. It’s to build consistency without flare-ups, so you can keep going.
What is the boom–bust cycle (and why it happens)?
The boom–bust cycle usually looks like this:
You feel motivated and do more than your body is currently ready for.
Pain, tightness, or fatigue spikes 24 72 hours later.
You rest completely (or stop altogether) until it settles.
You try again at the same intensity and the pattern repeats.
It happens because fitness and tissue tolerance drop faster than we realise during breaks. Your cardiovascular fitness might return quickly, but tendons, joints, and stabilising muscles often need a more gradual rebuild.
The biggest January mistake: treating your body like it’s still in November
After a few weeks of:
less structured movement
more sitting and driving
different sleep patterns
more stress (and sometimes less recovery)
your body is simply starting from a different baseline.
That doesn’t mean you’re unfit or failing. It just means your plan needs to match your current capacity, not your best-ever capacity.
How to restart exercise without triggering old injuries
1) Start with frequency, not intensity
If you only change one thing, make it this:
Do less per session, but show up more often.
For example:
2 3 short runs per week instead of one long run
2 lighter gym sessions instead of one heavy session
1 class + 1 mobility session instead of 3 classes back-to-back
Consistency builds tolerance. Intensity is the bonus.
2) Use the 24-48 hour rule
A little muscle soreness is normal. A flare-up that lingers is a sign you overshot.
After a session, ask:
How do I feel later today?
How do I feel tomorrow morning?
How do I feel 48 hours later?
If symptoms spike and stay elevated beyond 48 hours, scale back next time (duration, load, or volume).
3) Warm up like it matters (because it does)
In winter, and after a break, warm-ups are non-negotiable.
Aim for 5 10 minutes:
brisk walk or gentle cycle
dynamic mobility (hips, ankles, thoracic spine)
a few lighter sets before heavy lifts
Warm tissues tolerate load better. It’s one of the simplest injury-prevention tools you have.
4) Don’t skip strength (even if you’re a runner)
Most recurring injuries are load-management problems not “bad luck.”
A small amount of strength work improves how your body handles impact and repetition.
Key areas we often prioritise:
glutes and hip stability
calf and foot strength
core control (the supportive kind)
upper back strength for posture and breathing mechanics
You don’t need a complicated programme. You need the right exercises for your body.
5) Build recovery into the plan (not as an afterthought)
Recovery isn’t doing nothing. It’s doing the right amount.
Helpful recovery options:
gentle mobility flow
clinical yoga
easy walk
breathwork and down-regulation (especially if stress is high)
sleep support (routine, wind-down, consistency)
If you’re only training and not recovering, you’re borrowing from tomorrow.
Why biomechanics matter (and how they keep injuries from coming back)
If an old injury keeps returning, it’s rarely because you’re “broken.”
It’s often because a movement pattern is repeatedly overloading the same area for example:
hip stiffness forcing the low back to do more work
ankle restriction changing running mechanics
weak glutes shifting load into knees or Achilles
upper back stiffness increasing neck/shoulder tension in training
A biomechanical assessment helps identify these patterns early, so you can fix the driver not just calm the symptoms.
How we support you at Laura Fishlock Osteopathy
We love helping people return to movement with confidence whether you’re restarting gently or training hard.
Osteopathic assessment + hands-on treatment
We assess joint mobility, muscle function, posture, and movement patterns to understand what’s limiting you. Treatment can help restore mobility, reduce strain, and improve how your body shares load.
Personalised rehab exercises
This is where the real compounding happens.
We give you a small set of targeted exercises you can actually do designed to:
rebuild strength and control
improve mobility where you need it
reduce flare-ups
support your specific sport or training style
Recovery support (massage + nervous system regulation)
Massage can support muscle recovery and reduce tension if you’re loading up again.
And if stress, poor sleep, or persistent pain sensitivity is part of your picture, craniosacral therapy can be a gentle way to help the nervous system downshift which often improves recovery and reduces flare intensity.
When to get help (before it becomes a bigger problem)
Consider booking an assessment if:
you’re restarting exercise after a long break and want a safe plan
an old injury is already grumbling
pain keeps returning after training
you’re getting pins and needles, weakness, or pain that travels into an arm/leg
you’re unsure whether to rest, train, or modify
Ready to return to exercise without the setbacks?
You don’t need to push harder. You need a plan that matches your body.
Book an appointment at our Newbury or Hungerford clinic and we’ll help you rebuild strength, improve biomechanics, and stay consistent so your January motivation turns into year-round momentum.
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