From the Lab

Pixie Glute Training: Building Backside Shape at 80–100 lbs

May 26, 2025 · By Xavier Savage · Female Fitness, Pixie, Training

Pixie Glute Training: Building Backside Shape at 80–100 lbs

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If you are between 80 and 100 pounds and your backside is flat — no projection, no roundness, no visible shape from the side — you are not going to fix that with squats alone. Squats are a quad-dominant movement. They build the front of the thigh. The glutes respond to squats as a secondary muscle, not a primary one. If building a rounder, projecting, shaped backside is your goal — and for most Pixie-weight women it is — you need glute-specific training that places the gluteus maximus, gluteus medius, and gluteus minimus directly under load through their primary function: hip extension and hip abduction.

I am Xavier Savage, a personal trainer based in Houston, Texas and founder of XPL — Xesthetic Performance Labs. I run in-person training in Houston and online programs through XPL for clients across the US, Canada, and the UK. Glute training for the Pixie archetype requires understanding that you are building on a frame that likely has very little existing glute mass. The goal is construction — adding muscle tissue to a foundation that currently has minimal development. This requires a caloric surplus, progressive loading, and consistent training frequency. All three are non-negotiable.

The objection I hear constantly: “I need to lose weight first before I start lifting.” For the Pixie archetype weighing 80 to 100 pounds, this objection is not just wrong — it is backwards. There is nothing to lose. You are already lean. The work of building starts now, not after. Resistance training for glute development is the mechanism, not the reward at the end of a weight loss journey. Starting it now is the only path to the backside shape you are working toward.

Phase 1 — Glute Anatomy: Three Muscles, Three Functions

The glute complex consists of three muscles that must each be developed to produce the full, rounded, projecting backside shape. Training only hip extension — the movement most exercises emphasize — develops the gluteus maximus but neglects the upper outer hip shape produced by the gluteus medius. The result is a backside that looks fuller from behind but still lacks the round, lifted shape from the side. All three muscles need specific attention.

The gluteus maximus is the largest muscle in the human body and the primary driver of hip extension — the movement of pushing your hips forward from a bent position. It originates at the posterior ilium, sacrum, and coccyx — the back of the pelvis and tailbone — and inserts at both the iliotibial band and the gluteal tuberosity of the femur. It produces the overall size, projection, and shape of the backside. Underdevelopment of the gluteus maximus is why the backside looks flat from the side and formless from behind. All hip thrust, bridge, and deadlift variations primarily load the gluteus maximus.

The gluteus medius sits on the upper outer hip — the area you would grab if you were putting your hands on your hips. It originates at the outer surface of the ilium and inserts at the greater trochanter of the femur. Its primary function is hip abduction — raising the leg out to the side — and it also stabilizes the pelvis during any single-leg activity like walking, running, or lunging. Developed gluteus medius creates the rounded upper hip curve visible from the side and front, the outward hip projection that gives the silhouette its shape. Underdeveloped gluteus medius produces the flat-sided hip that makes even a developed gluteus maximus look less full than it is.

The gluteus minimus lies beneath the medius and assists with abduction and internal rotation. It is rarely trained specifically and develops adequately through medius-focused exercises.

For the Pixie archetype: hip thrust and Romanian deadlift variations for gluteus maximus development, cable abductions and lateral band walks for gluteus medius, and full squats for overall lower body integration.

Phase 2 — Somatotype and Ectomorph Glute Training

Ectomorphs at Pixie weight have the flattest natural glute profiles of any body type. The gluteal muscles tend to be underdeveloped simply because low body weight means low total muscle mass throughout the body, and the glutes — like all muscles — must be specifically loaded to grow. The ectomorph’s advantage is that with proper loading and adequate nutrition, even modest glute development produces visible and dramatic visual change because the baseline is so low.

Progressive overload on the hip thrust is the most important single commitment you can make for glute development at this weight class. Track your hip thrust weight every session and increase it as strength develops. The difference between a 45-pound hip thrust and a 135-pound hip thrust — achievable within 12 to 16 months of consistent training — is the difference between a flat backside and a fully developed one.

Phase 3 — Body Shape Breakdown

Rectangle

The rectangle Pixie has proportional hip-to-waist width. Glute development is the primary tool for creating the lower body shape that balances the straight, linear frame. Both gluteus maximus and gluteus medius development are critical — the maximus for projection and the medius for outer hip width. Hip thrust loading and abduction work in equal measure. Timeline: visible glute shape change by week 8 to 12. Side-profile projection change by week 12 to 16.

Hourglass

The hourglass has natural hip-to-waist definition. Glute training here reinforces the lower curve of the natural hourglass shape. Gluteus maximus development for fullness and projection is the priority — the natural hip width of the hourglass means medius development is less critical for proportional enhancement. Expect visible glute development by week 6 to 10.

Pear

The pear carries natural hip and thigh width. Glute development here requires careful approach — the goal is shape and projection, not adding more width to an already hip-dominant frame. Gluteus maximus work (hip thrusts, Romanian deadlifts) is the priority over abduction work. Limit lateral band walks and cable abductions — too much medius development on a pear shape adds lateral hip width rather than upper curve. Expect visible glute projection improvement by week 8 to 12.

Phase 4 — The Exact Protocol

Exercise 1: Hip Thrust (Barbell)

Sit on the floor with your upper back against a flat bench. Position a barbell across your hip crease — use a barbell pad for comfort. Your feet are flat on the floor, knees bent at approximately 90 degrees when at the top of the movement. Drive your hips upward by squeezing your glutes, pushing the bar toward the ceiling. At the top, your body should form a straight line from knees to shoulders. Your chin should be tucked — do not hyperextend your neck. Hold the top position for one full count, squeezing the glutes as hard as possible. Lower slowly. Do not let your lower back arch — the glutes should be doing the work, not the erectors.

Sets and reps: 4 sets of 10 reps. Start with a 45-pound barbell. Add 10 pounds every two weeks as long as form is maintained. Rest 90 seconds between sets.

Exercise 2: Romanian Deadlift (Dumbbell)

Stand with feet hip-width apart, holding a dumbbell in each hand in front of your thighs. Hinge at the hip — push your hips back, not down — allowing the dumbbells to slide down your thighs. Keep your back flat and knees slightly bent but nearly straight. Lower the dumbbells until you feel a significant stretch in your hamstrings — typically just below knee height for most people. Then drive the hips forward to return to standing, squeezing the glutes at the top. This exercise trains both the gluteus maximus and the hamstrings through hip extension under load.

Sets and reps: 3 sets of 12 reps. Start at 20 pounds per hand. Add 5 pounds every two weeks. Rest 90 seconds between sets.

Exercise 3: Cable Pull-Through

Attach a rope handle to a low cable pulley. Stand facing away from the machine, straddling the cable. Hold the rope ends between your legs. Hinge at the hip — push hips back, cable between legs. Stand back up by driving hips forward, squeezing glutes at the top. This movement trains the gluteus maximus through a similar pattern to a deadlift but with constant cable tension and no spinal loading — ideal for learning glute-dominant hip extension without technique complexity.

Sets and reps: 3 sets of 15 reps. Start at 20 pounds. Add 5 pounds every two weeks. Rest 60 seconds between sets.

Exercise 4: Cable Hip Abduction (Standing)

Attach an ankle cuff to a low cable pulley. Attach it to one ankle. Stand sideways to the machine with the cuffed ankle farther from the machine. Hold a support for balance. Raise the cuffed leg out to the side — directly sideways — as far as possible without leaning the torso. Lower slowly. This directly loads the gluteus medius through hip abduction.

Sets and reps: 3 sets of 15 reps per leg. Start at 10 pounds. Add 5 pounds every two weeks. Rest 45 seconds between legs.

Exercise 5: Bulgarian Split Squat

Stand in front of a bench. Place one foot on the bench behind you — the top of the foot facing down. Your front foot is far enough forward that when you lower into the squat, your front knee tracks over your toes but does not go significantly past your toes. Lower your back knee toward the floor. Your torso can lean slightly forward — this actually increases glute activation compared to a completely upright torso. Rise back to standing by driving through the front heel. Hold dumbbells at your sides for load.

Sets and reps: 3 sets of 10 reps per leg. Start with 10 pounds per hand. Add 5 pounds every two weeks. Rest 60 seconds between legs.

Home Alternative

Hip thrusts can be performed with a loaded backpack across the hips. Romanian deadlifts with heavy resistance bands anchored underfoot. Cable abduction with a resistance band looped around a table leg. The same progression principles apply — increase resistance, not just repetitions.

Phase 5 — Timeline, Signs, and When to Switch

Week 1: Deep glute soreness after the first session of hip thrusts — particularly in the upper glute near the sacrum. This is the gluteus maximus responding to direct loading for possibly the first time. Normal and expected.

Week 4: Glutes feel firmer at rest. Hip thrust weight should have increased by 20 to 30 pounds. Side profile may begin to show early projection change.

Week 12: Visible glute shape in side view. Projection when walking. Upper outer hip curve (medius) visible from front. Pants fit differently in the seat.

Signs it is working: hip thrust weight increasing every two weeks. Glute soreness present but manageable after sessions. Visual change in photos at weeks 4, 8, 12.

Signs it is not working: no hip thrust strength progression after six weeks. Zero visual change after 12 weeks. This almost always means the caloric surplus is not in place. Check the XPL High Protein Pixie protocol and confirm you are eating above maintenance. Glute muscle cannot be built from nothing without the caloric resources to build it.

When your weight moves consistently above 100 pounds, retake the XPL Archetype Quiz and progress to the Petite glute protocol.

I train clients in person in Houston, Texas and work with people across the US, Canada, and the UK online through XPL. Take the XPL Archetype Quiz to get your exact protocol, or visit xperformancelab.com/plans-pricing to work with me directly.

The standards behind the standards. — Xavier Savage, XPL Xesthetic Performance Labs, Houston, TX

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Xavier Savage

Founder, XPERFORMANCELAB

I do not shape muscle. I shape structure. The person you become is the person you construct.

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