Yes, squeezing your buttocks can genuinely tone it. An eight-week study published in PeerJ found that participants who performed only gluteal squeezes (no weights, no gym equipment) increased their gluteal girth by an average of 1.24 cm and significantly improved hip extension strength on both sides. That puts simple squeezes on par with glute bridges, one of the most popular butt-toning exercises, for building strength.
What the Research Actually Shows
The PeerJ study compared two groups over eight weeks: one performed bilateral glute bridges, the other performed standing gluteal squeezes. Both groups saw significant strength gains in hip extension. But here’s the surprising part: the squeeze group was the only one that increased gluteal girth at the widest point of the hip. The bridge group saw no measurable change in size at all.
The squeeze group also showed small decreases in girth above and below that widest point (about 0.7 cm in each direction), though those changes weren’t quite statistically significant. The overall effect suggests the muscle was reshaping, becoming fuller at its thickest point while potentially tightening in surrounding areas.
Why a Simple Squeeze Builds Muscle
Squeezing your glutes is a form of isometric exercise, meaning you’re contracting the muscle without moving a joint. Isometric contractions actually produce higher voluntary muscle activation than the concentric (lifting) or eccentric (lowering) phases of traditional exercises. That high activation drives both neurological and structural adaptations: your brain gets better at recruiting muscle fibers, and the fibers themselves grow and stiffen over time.
These adaptations aren’t limited to the squeeze itself. Research shows that isometric glute training improves dynamic movement tasks too, like sprinting and jumping. It also helps correct common issues like excessive anterior pelvic tilt (that lower-back arch from weak glutes) by giving you better control over hip extension. For people recovering from injury, isometric squeezes can help reverse the activation deficits that often linger after a glute or hip problem.
It Won’t Burn Fat Off Your Butt
Toning involves two things: building muscle and reducing the fat that sits on top of it. Gluteal squeezes handle the first part, but they won’t selectively burn fat from your backside. Spot reduction is a persistent myth. In one well-known study, participants did sit-ups for 27 days straight, and researchers measured fat at the abdomen, shoulder blades, and buttocks. Fat loss was the same across all three areas, regardless of which muscles were being worked.
When you exercise, your body pulls stored fat from everywhere, not just the area you’re targeting. So if your goal is a leaner, more defined look, gluteal squeezes will build the underlying muscle, but overall fat loss comes from your total caloric balance. Combining squeezes with regular cardio or full-body strength training gives you both pieces of the puzzle.
How Squeezes Compare to Other Exercises
Glute squeezes are used in research labs as a baseline measurement for how hard the gluteus maximus can contract. That tells you something important: a maximal squeeze represents close to 100% of your voluntary activation capacity for that muscle. By comparison, a parallel back squat activates the glutes at roughly 60% of maximum, a front squat around 41%, and a partial back squat only about 28%.
That doesn’t mean squeezes are “better” than squats. Squats load the muscle under resistance through a full range of motion, which is a more potent stimulus for growth over time, especially as you add weight. But for pure activation, a hard glute squeeze is difficult to beat. This is why many trainers use squeezes as a warm-up before heavier lifts: they “wake up” the glutes so they fire properly during squats, deadlifts, and lunges.
How to Do It Effectively
The participants in the eight-week study performed standing gluteal squeezes as their sole glute exercise and still saw measurable gains in both strength and size. While the exact protocol details varied, the key principles for making squeezes effective are straightforward:
- Squeeze as hard as you can. A half-effort contraction won’t produce the high activation levels that drive change. Think about cracking a walnut between your cheeks.
- Hold each squeeze for several seconds. Isometric training works best with sustained contractions, not quick pulses. Aim for 5 to 10 seconds per rep.
- Do multiple sets throughout the day. One of the biggest advantages of glute squeezes is that you can do them anywhere: standing in line, sitting at your desk, waiting for the elevator. Spreading sets across the day adds up to significant training volume without a gym visit.
- Be consistent for at least eight weeks. The study measured results at the eight-week mark. Strength gains often show up within the first few weeks, but visible changes in size and shape take longer.
Breathe normally while squeezing. Holding your breath during any isometric contraction can cause a sharp spike in blood pressure by triggering what’s called a bearing-down reflex. This is especially worth noting if you have high blood pressure or cardiovascular concerns.
When Squeezes Aren’t Enough
Gluteal squeezes are a real exercise with real results, but they have a ceiling. Because there’s no external load, you can’t progressively increase the resistance the way you can with squats, hip thrusts, or deadlifts. Once your glutes adapt to your maximum voluntary squeeze, the stimulus plateaus. For someone starting from a sedentary baseline, that plateau might take months to reach. For someone who already trains regularly, squeezes alone probably won’t push the needle much further.
The sweet spot for most people is using squeezes as one tool in a larger routine. They’re excellent for building a mind-muscle connection (learning to actually feel and control your glutes), for warming up before heavy lifts, for rehabilitation, and for adding extra training volume on rest days without taxing your joints. Pair them with loaded hip extension exercises, and you get the best of both approaches: high activation from the squeezes and progressive overload from the weights.