Ankylosing spondylitis is unpredictable. One day you wake up and everything feels manageable. The next day getting out of bed takes twenty minutes. But movement matters. Many people with AS find that regular, gentle exercise supports their overall wellbeing and daily comfort, and most rheumatologists encourage staying active within your limits.
What is AS and how does it affect training
Ankylosing spondylitis is a long-term inflammatory condition that mainly affects the spine and the sacroiliac joints. In some people, over time, new bone can form and vertebrae may fuse, reducing flexibility. Symptoms tend to develop gradually over months or years and come and go, and AS tends to first develop in teenagers and young adults (NHS).
For people who train, AS presents a particular challenge. Stiffness is typically worst in the morning and after periods of inactivity. Many people find high-impact activity uncomfortable, especially during a flare. Fatigue is common and can be unpredictable. And traditional fitness apps have no way to account for any of this: they push harder on exactly the days your body is asking for less.
Training with AS is not about pushing through pain. It is about listening to your body and responding thoughtfully. That requires a different approach to fitness than what most people are used to.
Best types of exercise for AS
Many people with AS find that low-impact, mobility-focused exercise supports their comfort and function. NASS, the UK patient charity, describes the aim of exercise in axial SpA as maintaining or improving flexibility, range of movement and posture, and reducing stiffness and pain (NASS). NICE recommends that people with axial spondyloarthritis are referred to a specialist physiotherapist for a structured exercise programme (NICE NG65).
- Swimming and water based exercise are often suggested by physiotherapists. Water supports the joints while providing resistance, which allows range-of-movement work without impact; NASS describes hydrotherapy for axial SpA (NASS)
- Mobility and stretching routines may help some people manage stiffness and maintain comfortable movement. A physiotherapist can help you choose movements and a duration that fit your body
- Low impact strength training may help maintain the muscular support around the spine. Many people focus on controlled movements and moderate loads, and avoid heavily compressing the spine under weight; NASS suggests lower weights and higher repetitions (NASS)
- Walking and gentle cycling can be lower-impact options on days when a full workout feels like too much, if they are comfortable for you
The key for most people is consistency over intensity. NASS says any exercise needs to be regular, consistent and kept up over the long term, and many people find shorter regular sessions easier to sustain than occasional hard ones. That is an observation about habits, not a clinical claim about inflammation.
What to avoid during a flare
When symptoms spike, your body is telling you something, and ignoring it rarely helps. During a flare the priority shifts from training to recovery.
Many people choose to avoid high-impact activities such as running and jumping during a flare, to reduce load on the spine, and to leave out lifts that rotate or heavily load the spine. NASS’s safety guidance is that there will be good and bad days where you can do a bit more or need to do a little less, that many people prefer to avoid high-impact sport during a flare, and to check with a health professional before starting anything new (NASS, Safety first). This is not the time to test a deadlift record. See exercise during an AS flare for what adapting can look like in practice.
Some people find gentle movement comfortable during a difficult period; others need more rest or clinical guidance. Use the plan agreed with your healthcare team, stop if symptoms worsen, and do not use the app to decide whether a symptom needs medical attention.
The hard part is knowing where the line is. That is where daily tracking becomes critical.
HAVYT chronic condition support uses your check-ins to suggest gentler plan adjustments
The importance of tracking inflammation signals daily
AS can feel random, but many people find that tracking daily signals helps them notice patterns over time — sleep quality, stress, physical activity, nutrition, morning stiffness duration. Recorded consistently over weeks and months, these may reveal associations that are invisible day to day. The what to track with AS guide covers the signals worth recording.
A difficult period that seems to come out of nowhere may follow a recognisable pattern in your own record: several nights of poor sleep, a stressful week, skipped mobility sessions. A pattern like that is an association, not a cause, and something to raise with your team. Paying attention to it can help you make more informed decisions about your activity.
Daily tracking turns this invisible process into something you can see and reflect on. When you notice that poor sleep combined with high stress tends to precede difficult days in your record, you can adjust proactively — reduce training intensity, prioritise recovery — and discuss what you have seen at your next review. These small adjustments, made at the right time, may support your overall wellbeing; they are not a way to prevent flares.
How HAVYT chronic condition support adapts your plan
HAVYT was not built only for people who are always at 100%. Chronic condition support treats your situation as a core input, not an afterthought.
- Daily wellness check that captures signals including sleep, stress, activity levels and how you feel, so today can be compared with your own baseline
- Explainable plan suggestions that can reduce training intensity on difficult days, show why the change was suggested, and remain yours to accept or override
- Pattern tracking that surfaces personal patterns over time, see what tends to affect you, share the data with your healthcare team and make more informed decisions about your activity
- Low-friction food notes that may help you notice personal food-to-symptom patterns over time without turning HAVYT into a calorie counter
Most fitness apps assume everyone is the same. HAVYT was built to support everyone, including those managing chronic conditions. This feature is a supportive tool and is not a substitute for medical advice. See an app built around ankylosing spondylitis.
