Intermediate

Side-Lying Bicycle

This side-kick variation strings hip flexion, knee flexion, and hip extension into one flowing pedal, so the outer hip and glute work while the hamstrings and quads assist through the range. It demands real pelvic control because the shifting lever constantly tries to tip the trunk. A favorite for grooving hip coordination alongside strength.

Equipment
Body Weight
Body part
Glutes, Thighs
Type
Functional, Pilates, Strength
Muscles worked
Target
Gluteus Medius, Gluteus Maximus
Secondary
Biceps Femoris, Rectus Femoris
Tertiary
Abdominal External Oblique

How to do it

  1. 1

    Lie on your side, body in a straight line, top leg lifted to hip height.

  2. 2

    Reach the top leg forward as far as the pelvis allows, keeping it long.

  3. 3

    Bend the knee and draw it back so the heel travels toward the glute.

  4. 4

    Extend the leg straight behind you into hip extension.

  5. 5

    Straighten and sweep it forward again to complete the pedal, then reverse the direction.

  6. 6

    Finish the reps and repeat on the opposite side.

Tips

  • Keep the pedal slow and deliberate; this is a control drill, not a speed drill.
  • Do not let the low back arch as the leg reaches behind you.
  • Anchor the waist lift so the ribs stay quiet through the whole circle.

Variations

Common mistakes

  • The pelvis rocks open toward the ceiling as the leg sweeps forward, letting momentum finish the reach instead of the hip flexors.
  • Letting the top leg drift below hip height after a few reps shrinks the range and shifts the work off the gluteus medius.
  • The bottom leg goes soft and bends at the knee to help rock the body, stealing stability the working hip is supposed to provide alone.
  • The head cranes forward to track the moving leg, pulling the neck out of line with the rest of the spine.
  • Holding the breath through the pedal tightens the trunk and blocks the slow, continuous control the movement depends on.

Frequently asked

How many reps of the side-lying bicycle should you do when you are new to the exercise?
Start with 2 sets of 8 slow pedals on each side, resting about a minute between sides. Once you can keep the hips stacked and the ribs quiet for the full set, add a third set before adding reps. Because control matters more than speed here, progress by slowing the tempo or holding two counts at full hip extension rather than by rushing to more reps.
How do you make the side-lying bicycle easier or harder?
To make it easier, rest the top hand on the floor in front of you for balance and shorten the reach at both ends of the circle. To make it harder, lift the top hand off the floor and hold it along your side, or add a light ankle weight so the outer hip has to control more resistance through the full pedal.
What is the side-lying bicycle good for, and when should you skip it?
It trains the gluteus medius and the deep hip stabilizers that keep your pelvis level when you walk, run, or stand on one leg, which makes it useful for hip-focused strength and injury-prevention work. It is a poor choice during an acute hip or SI joint flare-up, since the constant small range can irritate an already inflamed joint before it builds any strength.

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