Learn how to do a lunge safely after 40 with the right setup, steps, common mistakes, easier and harder versions, and sets and reps for beginners.
A lunge is a step forward or backward into a deep staggered stance, then back up. It builds the legs and the balance for stairs, kerbs and uneven paths. After 40, learn the split squat first, then try a supported reverse lunge for 2 sets of 6 to 8 reps per leg, twice a week.
Why do lunges matter?
Walking and stair climbing are repeated single-leg movements. The lunge works the thighs, glutes and calves while challenging balance, which is why it appears in many falls-prevention programmes. A Cochrane review found that exercise combining balance and strength reduces falls in older adults living in the community.
The trade-off is that lunges load the knee more than most basic exercises. Biomechanics research shows that patellofemoral force and stress in a forward lunge increase with knee bend, and are higher with a short step than a long one. In practice, a longer stride and moderate depth are kinder to the knee.
Build the base first with how to do a squat and how to do a split squat. The lunge belongs to the broader strength training for longevity plan.
What do you need to set up?
- Space of about 1.5 metres in front or behind you.
- A wall, counter or chair to hold on to.
- Flat shoes with grip. Avoid wet tile and slippery sandals. In the rainy season, check the floor is dry.
- Two light dumbbells (2 to 6 kg) only after you are steady.
How do you do a reverse lunge step by step?
The reverse lunge is the easiest to control, so start here.
- Stand tall. Feet hip-width apart, hands on your hips or on a support.
- Step back. Take a long step backward with one leg, landing on the ball of the foot.
- Lower. Bend both knees and drop straight down. Your front knee tracks over the second toe, and the back knee hovers above the floor.
- Keep your chest tall. Do not lean forward or let the front knee cave.
- Push back up. Press through the front heel and bring the back foot in to start.
- Switch legs or complete all reps on one side first.
Take 2 seconds to go down and 1 second to come up.
Forward lunge
Step forward with a long stride, land heel first, lower, then push back off the front foot to stand. It is harder on balance and the knee, so use it after you are comfortable with the reverse version.
What are the common mistakes?
| Mistake | Fix |
|---|---|
| Short stride | Take a longer step so the front shin stays near vertical |
| Front knee collapses inward | Think “knee over second toe” and shorten the depth |
| Leaning forward, rounded back | Keep the chest tall and look ahead |
| Narrow, tightrope stance | Keep feet hip-width apart |
| Dropping fast, bouncing at the bottom | Lower slowly, pause briefly |
| Too deep, too soon | Use half-depth until strong |
| Too many reps in the first session | Start small and add gradually |
What are easier and harder versions?
Easier
- Split squat holding a counter.
- Supported reverse lunge, hand on a wall.
- Half-depth lunge to a high cushion or a pad behind the knee.
- Step-ups on a low step.
Harder
- Unsupported reverse lunge.
- Dumbbells at the sides, added 1 to 2 kg at a time.
- Forward lunge, then walking lunge along a clear 5 metre path.
- Lunge with a reach or a rotation, once balance is good.
- Lateral lunge for side-to-side control.
If balance is limiting, add the single-leg stand and the heel-to-toe walk between sessions.
What sets and reps should adults over 40 use?
The NSCA position statement supports gradual progression in resistance training for older adults, and the WHO recommends muscle-strengthening on at least two days a week.
- Beginner: 2 sets of 6 to 8 reps per leg, supported reverse lunge, 2 days a week.
- Intermediate: 3 sets of 8 to 12 per leg, unsupported.
- Advanced: light dumbbells, walking lunges, 3 sets of 8 to 10 per leg.
Rest 60 to 90 seconds between sets and at least 48 hours between lunge days. Lunges tend to cause more soreness than squats, especially in the first week. See doms and soreness after 50.
Who should check with a doctor first?
Check with a doctor or physiotherapist before lunging if you have:
- a knee or hip replacement, recent surgery or fracture
- knee osteoarthritis with swelling or pain with stairs
- meniscus, ligament or kneecap problems
- frequent falls, dizziness or vertigo
- heart disease, uncontrolled blood pressure or chest pain on exertion
Our guides on exercise for knee osteoarthritis and knee pain and keeping active offer safer options. For balance-specific work see balance and stability training.
When should you stop?
Stop and rest if you feel sharp knee pain, a catching or locking sensation, the knee giving way, new swelling, chest pain, dizziness or breathlessness out of proportion. Muscular burning is expected. Sharp or pinching pain around the kneecap means you should reduce depth or switch to split squats.
You can compare leg strength with the chair stand norms and find other movements in the exercise library.
Key takeaways
- The lunge trains single-leg strength and balance, but loads the knee more than a squat.
- Start with a supported reverse lunge at half depth, with a long stride and chest tall.
- Begin with 2 sets of 6 to 8 reps per leg, twice a week, with at least 48 hours between sessions.
- Progress to unsupported lunges, then light dumbbells, and only then walking lunges.
- Check with a doctor first after joint surgery or with knee problems, dizziness or heart disease, and stop for sharp knee pain.