Bootcamp With Bad Knees: Swaps and Safe Starts
Your knees click on the stairs, ache after kneeling on the bathroom floor at bath time, and complain when you get up from the sofa. So when someone suggests a fitness class, your first thought is “not with these knees”. The good news is that doing bootcamp with bad knees is often possible, and the right kind of strength work can actually make your knees feel better. The trick is picking a class that adapts to you, and knowing which swaps to ask for.
Why strong legs usually help sore knees
Your knee sits between two big levers, your thigh and your shin. The muscles around it, especially the quads, glutes and calves, help absorb load and keep the joint moving smoothly. When those muscles are weak, more stress goes through the joint itself.
That is why physios often give exercises for knee pain. The NHS page on osteoarthritis treatment says exercise, including strengthening exercises, is one of the main treatments. The aim is not to avoid using your knees. It is to load them in a way they can handle, then build up slowly.
Check with a GP or physio before you book if…
- Your knee is swollen, hot or locks or gives way.
- You cannot fully bend or straighten it.
- Pain started after a twist, fall or injury.
- You have had knee surgery in the last year.
- Pain wakes you at night or is getting steadily worse.
The NHS page on knee pain explains common causes and when to get help. If you have a diagnosis, ask your physio which movements to focus on and what level of discomfort is OK during exercise.
Bootcamp with bad knees: knee-friendly swaps
Most bootcamp moves have a knee-friendly version. These are the swaps I use most in my classes:
| Common move | Knee-friendly swap | Coaching tip |
|---|---|---|
| Jump squats | Box squat to a bench | Sit back to touch the bench, then stand. Controls depth. |
| Forward lunges | Reverse lunge, short step, or split squat holding a support | Stepping back puts less stress on the front knee |
| Burpees | Incline step-back to plank on a bench | No jumping, no kneeling |
| Skipping or high knees | Fast marching or punches on the spot | Keeps heart rate up without impact |
| Deep squats | Partial squats or a glute bridge | Work in the range that feels OK, build depth over time |
| Kneeling exercises | Same move standing, or a folded mat under the knee | Kneeling pressure is a common trigger |
| Box jumps | Step-ups onto a low step | Drive through the whole foot, step down slowly |
For a full home session built around these, see my knee-friendly workouts.
Form cues that protect your knees
- Knees follow toes. When you squat or lunge, keep your knee pointing over your second toe, not caving inwards.
- Whole foot down. Press through your heel and the ball of your foot, not just your toes.
- Use your hips. Push your hips back in a squat so your glutes share the work.
- Control the way down. Lower for a slow count of 2 or 3. Speed and bounce are what tend to hurt.
- Pick a pain-free range. If halfway down is fine but deeper hurts, stop at halfway and build from there.
My guide to squat variations for beginners has more options to suit different knees.
The “pain monitoring” rule
Many physios use a simple approach: a little discomfort during exercise, around 2 or 3 out of 10, can be acceptable if it settles within 24 hours and the knee is not more swollen the next day. Sharp pain, pain that builds through the session, or a knee that is worse the next morning means you have done too much. Drop back a level. If in doubt, ask your physio what is right for you.
Questions to ask before booking any class
- How many people are in each class? (Smaller is better. Mine are capped at 10.)
- Does every exercise have a low-impact option?
- Will the coach ask about injuries before the first session?
- Is jumping optional?
- Is the floor suitable? (Concrete car parks are harder on joints than a sprung or matted floor.)
- Can I message you beforehand to talk about my knees?
If the answer to most of those is “yes”, you are in good hands.
A simple knee-strength routine for home
Two or three times a week, between classes:
- Sit to stand from a chair: 3 sets of 8 to 10, slow on the way down
- Glute bridge: 3 sets of 10
- Straight leg raise lying down: 2 sets of 10 each leg
- Calf raises holding a wall: 3 sets of 12
- Step-ups onto the bottom stair: 2 sets of 8 each leg
Start easy and add reps over a few weeks. My SYP Built To Last functional strength class for over 35s uses many of these moves, with no jumping required.
FAQs
Can I do bootcamp with knee arthritis?
Many people with knee osteoarthritis can, as long as the class offers low-impact options and you build up gradually. Check with your GP or physio first.
Are squats bad for your knees?
Not for most people. Squats done with good form and a comfortable depth usually strengthen the muscles that support the knee. If they hurt, reduce the depth or try a box squat.
Should I wear a knee support for bootcamp?
Some people find a sleeve comfortable, but it does not replace strength. Ask your physio whether one is useful for you.
What if my knee hurts during class?
Stop that exercise and tell the coach. They should give you an alternative straight away. Never push through sharp pain.
Book your first class
If your knees have kept you out of classes, come and try one built around options. SYP Bootcamp runs 45-minute small-group sessions in an indoor church hall in Archway N19, max 10 people, £15 a class, and jumping is always optional. Book your £15 class here or call or WhatsApp me on 07301 512215 to talk about your knees first. If you need a more careful start, see injury-safe personal training in Archway.
About the author
Artem Olekhnovych is a personal trainer in Archway and the founder of SYP Fitness and SYP Bootcamp. He has coached clients in Archway, Highgate and across North London for over 10 years, and runs small-group bootcamp classes for busy mums and dads. Read reviews from his 1-1 clients.
