5 Exercises Every Brussels Runner Needs to Stay Injury-Free
Brussels is a brilliant city for running. The canal paths in the early morning, loops through the Bois de la Cambre, laps around Cinquantenaire — there’s a reason running is the city’s most popular form of exercise.
But here’s the uncomfortable truth: roughly half of all recreational runners will pick up an injury this year. Not because running is inherently dangerous. Because most runners do absolutely nothing to prepare their bodies for the demands of running.
The good news? The vast majority of these injuries are preventable. Five targeted exercises, done consistently, will dramatically lower your risk.
Why runners get hurt
Running is a repetitive impact sport. Every stride sends 2.5–3x your body weight through your legs. Over a 10km run, that’s roughly 6,000 repetitions per leg. Your body can handle this — it’s designed for it — but only if the load is distributed properly.
When it isn’t, tissues break down. And in my experience treating runners in Brussels for over twenty years, three factors cause the overwhelming majority of problems:
Weak glutes. This is the single biggest issue I see. Your gluteus medius and maximus are supposed to stabilise your pelvis and control your leg position with every stride. When they’re weak — and after sitting at an EU desk all day, they almost always are — your knee collapses inward, your IT band gets overloaded, and your lower back compensates. One weak link, three potential injuries.
Tight hip flexors from desk work. Eight hours of sitting shortens your hip flexors, which tilts your pelvis forward, which inhibits your glutes further (they literally can’t fire properly), which alters your running mechanics. It’s a vicious cycle, and the Brussels office-worker-turned-weekend-runner is the classic victim.
Ramping up too fast. You feel good on a Sunday morning. You run 12km instead of your usual 7. The following week, your knee starts aching. Sound familiar? Tendons and bones adapt to load far more slowly than your cardiovascular fitness improves. Your heart says yes; your Achilles tendon says absolutely not.
The big three running injuries
These aren’t the only running injuries, but they account for the majority of what walks through my door:
Runner’s knee (patellofemoral pain)
A dull ache around or behind the kneecap, worse going downstairs, during or after running, and after prolonged sitting. The root cause is almost never the knee itself — it’s weak quads and, more importantly, weak glutes allowing the knee to track poorly.
IT band syndrome
Sharp pain on the outer knee, typically kicking in at a predictable distance into your run. The IT band is a thick fascial strip running from your hip to your knee. When your hip stabilisers are weak, it gets overloaded doing their job. Foam rolling your IT band feels satisfying but doesn’t fix the cause. Strengthening your hips does.
Achilles tendonitis
Stiffness and pain at the back of the ankle, especially first thing in the morning or at the start of a run. This is a load management problem: your calf-Achilles complex is being asked to absorb more force than it’s conditioned for. The fix is progressive loading, not rest.
Notice the pattern? Weak glutes and hips are implicated in all three injuries. This is why the exercise list below is heavily weighted toward hip and glute work.
The 5 essential exercises
These are the five exercises I prescribe most frequently to runners. They’re not complicated. They don’t require equipment. They take about 12 minutes. The catch is you actually have to do them.
1. Single-Leg Glute Bridge
Why: Glute activation and strength in a running-specific single-leg pattern. This is the single most important exercise on the list.
- Lie on your back, one knee bent with foot flat on the floor, other leg straight and raised
- Push through your heel to lift your hips until your body forms a straight line
- Squeeze your glute hard at the top — hold 2 seconds
- Lower slowly (3 seconds down)
Dose: 3 sets of 10 each leg. If you can’t do 10 clean reps, start with a double-leg bridge and progress.
2. Clamshells
Why: Targets gluteus medius — the key hip stabiliser that prevents your knee collapsing inward during running. Weakness here is behind most runner’s knee and IT band issues.
- Lie on your side, knees bent to 90 degrees, feet together
- Keeping feet touching, open your top knee toward the ceiling
- Don’t let your pelvis roll backward (this is where people cheat)
- Slow and controlled — 2 seconds up, 2 seconds down
Dose: 3 sets of 15 each side. Add a resistance band above the knees when it becomes easy.
3. Eccentric Calf Drops
Why: Tendon health. Tendons respond to slow, loaded eccentric (lowering) contractions. This is the gold-standard exercise for preventing and treating Achilles problems.
- Stand on the edge of a step on one foot (ball of foot on step, heel hanging off)
- Rise up onto your toes using both feet
- Lift the unaffected foot and slowly lower on one leg (count to 5)
- Drop your heel below step level for a full stretch
Dose: 3 sets of 12 each leg. Mild discomfort during the exercise is acceptable; sharp pain is not.
4. Kneeling Hip Flexor Stretch
Why: Counteracts sitting. Tight hip flexors inhibit glute function and alter your pelvic position while running, making every other problem on this list worse.
- Half-kneeling position (one knee on the ground, other foot forward)
- Tuck your pelvis under — this is critical, most people skip it and feel nothing
- Gently shift your weight forward until you feel a stretch at the front of the back hip
- Hold. Breathe. Don’t arch your lower back.
Dose: 60 seconds each side, twice daily if you sit for work. Non-negotiable.
5. Plantar Fascia Release
Why: Your feet absorb enormous forces during running, and plantar fasciitis is miserable. A minute of daily self-massage keeps the fascia healthy and can catch problems before they start.
- Place a tennis ball (or golf ball for more intensity) under your foot
- Roll slowly from heel to toes, spending extra time on tender spots
- Apply enough pressure that it’s uncomfortable but not painful
- Include the arch and the ball of the foot — not just the heel
Dose: 60 seconds each foot, daily. Do it while making coffee or watching television.
Smart training: two rules that prevent most injuries
The 10% rule
Don’t increase your weekly running volume by more than 10% per week. This applies to total distance, duration, or intensity. Your cardiovascular fitness will adapt faster than your tendons and bones. Let the slower tissues catch up. Patience isn’t exciting, but neither is six weeks off with Achilles tendonitis.
The 80/20 rule
80% of your running should be easy — genuinely easy. Conversational pace, not breathless. This builds your aerobic base without hammering your joints. The other 20% can be harder: intervals, tempo runs, hill work. Most recreational runners do nearly all their running at a moderate-hard intensity, which is the worst of both worlds — too hard to recover from, too slow to get fast.
If you follow the 10% rule and the 80/20 rule, you’ll eliminate the majority of training-load injuries before they happen. It sounds too simple. It works.
When to stop running: the traffic light system
Not every ache means you’re injured. But some pains are your body drawing a clear line. Here’s how to read the signals:
Green — safe to run
- General muscle soreness that fades within the first 10 minutes of running
- Mild stiffness in the morning that resolves once you’re moving
- DOMS (delayed onset muscle soreness) from a harder session — symmetrical and muscular
Amber — proceed with caution
- Pain that appears during a run but doesn’t worsen — reduce distance and pace
- Persistent soreness in a specific spot (knee, Achilles, shin) that lingers after runs
- Tightness that doesn’t resolve with your normal warm-up
- You’re compensating — limping, shortening your stride, or favouring one side
Action: Drop your volume by 50%, focus on the exercises above, and reassess in a week. If it’s not improving, get it looked at.
Red — stop running, get assessed
- Sharp pain that gets worse as you run
- Pain that changes your gait (you can’t run normally)
- Night pain or pain at rest
- Swelling, especially around a joint
- Any sudden onset of pain — a pop, a snap, or a give-way
- Numbness or tingling in your foot or leg
Action: Stop. Don’t run through it. See a professional before it becomes a bigger problem.
Related: Why You’re Getting Stiffer Every Year
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