The One Core Move You're Missing (And Why It Hits More Muscles Than You Think)
You've been doing crunches for months. Plus, maybe you've tried planks, Russian twists, and even some fancy mountain climbers. But that stubborn side fat won't budge, and your obliques still feel like mystery muscles. Here's the thing — you're missing one of the most effective exercises for your entire side body: the side lying leg raise And that's really what it comes down to..
This isn't just another core move. And the best part? In practice, when done right, side lying leg raises work more muscles than you probably realize. You don't need any equipment, just your body weight and a yoga mat That's the whole idea..
What Are Side Lying Leg Raises?
Side lying leg raises are exactly what they sound like — you lie on your side and lift your top leg against gravity. But don't let the simplicity fool you. This move is a full-body side workout that targets your core, hips, and even your posture And that's really what it comes down to. And it works..
The Setup
Lie on your side with your legs straight and stacked. Place your bottom arm on the floor for support, or tuck it under your head if you prefer. Keep your top hand on your hip or let it glide up your side for balance. Your feet can be together or slightly staggered — whatever feels stable.
The Movement
Lift your top leg 6-12 inches off the ground, hold for a beat, then lower with control. That's one rep. The key is keeping your pelvis still — no rocking or twisting. Think of your core as the conductor of this movement, not just your legs.
Why This Exercise Actually Matters
Here's what most guides miss: side lying leg raises aren't just about getting "toned" sides. They're about building functional strength that supports your entire body Nothing fancy..
When you strengthen your obliques and hip abductors, you're not just shaping up your waistline. You're improving your balance, protecting your lower back, and even enhancing your walking and running mechanics. Athletes swear by this move because it builds the stabilizing strength that prevents injuries.
Plus, if you spend most of your day sitting, your hip abductors are probably weak as heck. This exercise wakes them up and reminds them what their job actually is And it works..
The Muscles Worked During Side Lying Leg Raises
Let's break down exactly what's firing during this move. It's more than just your obvious core muscles.
Primary Muscles Worked
Internal and External Obliques These are your main side waist muscles. Your external obliques (the outer layer) help with lateral stability, while internal obliques assist with trunk rotation and flexion. Together, they're responsible for that defined waist you're chasing.
Hip Abductors (Gluteus Medius and Minimus) These muscles live in your butt and hip area. They're crucial for hip stability and preventing that hip drop you see in runners with poor form. Weak hip abductors = lower back pain and knee issues down the road Worth keeping that in mind..
Tensor Fasciae Latae (TFL) This muscle runs along your hip and outer thigh. It assists with hip abduction and helps stabilize your pelvis when you're standing on one leg.
Secondary Muscles Engaged
Rectus Abdominis Your "six-pack" muscle works overtime to keep your torso stable and prevent any unwanted movement.
Erector Spinae Your lower back muscles fire to maintain proper alignment and prevent your spine from arching.
Deep Core Stabilizers (Transverse Abdominis) These invisible muscles act like a natural weight belt, keeping your entire trunk engaged throughout the movement Practical, not theoretical..
Common Mistakes That Ruin Your Results
I've watched people butcher this move in gyms, and it breaks my heart. You're not getting the full benefit when these mistakes happen.
Rocking and Twisting
The #1 error. People swing their legs or rotate their torso to generate momentum. This defeats the entire purpose. Your core should be working so hard that your legs feel heavy — not the other way around.
Arching Your Back
When you lift your leg, your lower back tends to arch off the mat. This takes tension off your target muscles and puts stress on your spine. Keep that core tight and imagine someone trying to tickle your stomach — your abs should be braced against the attempt.
Lifting Too High
Going beyond 12 inches doesn't make you more badass. It just shifts the work to your hip flexors and reduces the challenge on your obliques. Find your sweet spot and master that range first But it adds up..
Neglecting the Lower Abs
Many people focus on lifting but forget to engage their lower belly. Before you lift, take a breath and draw your navel toward your spine. That's your cue to start Turns out it matters..
Practical Tips That Actually Work
Here's where theory meets reality. These aren't generic tips you'll find everywhere — they're battle-tested strategies that make a difference That's the part that actually makes a difference..
Start with Isometric Holds
Instead of lifting right away, try holding your top leg at 6 inches for 10 seconds. This teaches your brain to engage the right muscles before adding movement Which is the point..
Progress With Resistance Bands
Once bodyweight feels easy, loop a resistance band around your ankles. The added tension forces your stabilizing muscles to work harder without changing the movement pattern.
Focus on Quality Over Quantity
Ten perfect reps beat 30 sloppy ones every time. If you're losing form, drop down and reset. Your muscles will thank you.
Try the Dead Bug Variation
Lie on your back with arms extended toward the ceiling. Lift your top leg while reaching your opposite arm overhead. This challenges your core in a different plane and prevents compensation patterns And that's really what it comes down to..
Don't Forget the Other Side
It's tempting to rush through the second side, but your weaker side needs equal attention. Spend an extra 30 seconds on whichever side feels harder.
Frequently Asked Questions
How Many Side Lying Leg Raises Should I Do?
For strength gains, aim for 2-3 sets of 10-15 reps per side. If you're using them as a warm-up or finisher, 1-2 sets of 8-10 reps works fine. Listen to your body
and adjust based on how your hips and core feel the next day. Quality trumps volume — if your form breaks down at rep 8, stop there.
Can I Do These Every Day?
Yes, but with caveats. Side lying leg raises are low-impact enough for daily practice, especially as a movement prep drill or activation exercise. Even so, if you're loading them heavily with bands or ankle weights, treat them like any strength movement — give the muscles 48 hours to recover. A good rule: alternate between loaded and unloaded days The details matter here..
My Hips Click When I Do These. Is That Bad?
An occasional click without pain is usually harmless — often just gas bubbles in the joint or a tendon snapping over bone. But if it's accompanied by pain, catching, or a grinding sensation, back off. Check your form first: are you rotating the hip instead of lifting purely sideways? Are you going too high? If the clicking persists after form corrections, get it assessed by a physio Turns out it matters..
Do Side Lying Leg Raises Help With Knee Pain?
Indirectly, yes. Weak glute medius — the primary muscle targeted here — is a major contributor to knee valgus (caving inward) during squats, lunges, and running. Strengthening it improves hip control, which reduces stress on the knee joint. They're not a magic bullet for existing knee issues, but they're a staple in most rehab protocols for a reason.
What If I Can't Feel My Glutes Working?
You're likely compensating with your TFL (tensor fasciae latae) or hip flexors. Try this: before lifting, gently press your bottom knee into the floor. This activates the posterior chain and helps "turn on" the glute medius. You can also place your top hand on your upper glute — tactile feedback helps the brain find the muscle.
The Bottom Line
Side lying leg raises look deceptively simple. Now, that's exactly why they're so easy to mess up — and so powerful when done right. They expose weaknesses that heavy squats and deadlifts hide. They build the lateral stability that keeps your knees healthy, your gait efficient, and your hips resilient The details matter here. That's the whole idea..
You don't need fancy equipment. Now, you don't need an hour. You need a mat, three minutes, and the discipline to do the small things well.
Your hips will thank you — not tomorrow, but ten years from now when you're still moving freely while everyone else is complaining about "getting old."
Start tonight. Two sets. Ten reps. Perfect form And it works..
That's how strong is built.
