Swimming exercise animation (Female)

Swimming

Target muscle
—
Equipment
Body weight
Body part
Back, Hips, Thighs
Type
Stretching

Swimming is a floor-based stretching and mobility drill performed lying face down, where alternating arm and leg raises mimic the motion of a freestyle swim stroke on land. The movement targets the back, hips, and thighs, improving spinal extension, hip mobility, and posterior chain flexibility. It is commonly used as a warm-up, cool-down, or active recovery exercise to counteract prolonged sitting and anterior-chain tightness.

How to do the Swimming

  1. 1Lie face down on an exercise mat with your legs extended straight behind you and your arms stretched overhead, palms facing down.
  2. 2Engage your core lightly to protect your lower back and keep your hips level with the floor throughout the movement.
  3. 3Inhale to prepare, then exhale as you simultaneously lift your right arm and left leg a few inches off the floor.
  4. 4Hold the raised position for one count, feeling the stretch and contraction along your back, hip, and thigh.
  5. 5Lower your right arm and left leg back to the floor with control.
  6. 6Immediately lift your left arm and right leg to the same height, alternating sides in a fluid, rhythmic motion.
  7. 7Continue alternating sides — right arm/left leg, then left arm/right leg — as if you were swimming through the air.
  8. 8Keep your head in a neutral position with your forehead hovering just above or lightly resting on the mat throughout.
  9. 9After completing the desired number of repetitions, lower both arms and legs to the floor and rest in the prone position.

Form tips

  • Move slowly and with control rather than swinging your limbs — a deliberate tempo increases time under tension and deepens the stretch through the back and hips.
  • Breathe rhythmically: exhale as you raise your arm and leg, inhale as you lower them, to keep the core engaged and the movement fluid.
  • Keep your gaze directed down at the mat rather than craning your neck upward, which protects the cervical spine and maintains proper alignment.
  • Focus on lengthening through the lifted arm and leg rather than lifting for maximum height — extension creates the stretch, not altitude.
  • If your lower back feels compressed, reduce the range of motion and concentrate on initiating the lift from your glutes and upper back rather than hyperextending the lumbar spine.

Common mistakes

  • Lifting the limbs too high: forcing the arm and leg to an extreme height causes the lower back to hyperextend excessively, placing unnecessary compression on the lumbar spine and reducing the quality of the stretch.
  • Holding the breath: failing to breathe rhythmically increases tension throughout the torso, limiting mobility and reducing the effectiveness of the stretch on the back and hips.
  • Craning the neck upward: lifting the head to look forward strains the cervical spine and disrupts the neutral alignment needed to properly mobilise the thoracic back.
  • Using momentum instead of control: swinging the arms and legs rapidly turns a mobility drill into a momentum exercise, bypassing the target muscles in the back, hips, and thighs and reducing the stretching benefit.
  • Letting the hips rotate: allowing the pelvis to twist or one hip to lift off the floor as you raise a leg reduces tension on the intended muscles and can create asymmetrical stress on the lower back.

Frequently asked questions

What muscles does the Swimming exercise work?

The Swimming drill primarily mobilises and stretches the muscles of the back, hips, and thighs. The erector spinae and other spinal extensors work to lift and stabilise the torso, the glutes and hip extensors engage as you raise each leg, and the hip flexors and quadriceps of the opposite leg receive a lengthening stretch. The exercise functions as both a gentle strengthening and a mobility drill for the entire posterior chain.

Is Swimming suitable for beginners?

Yes, Swimming is an accessible exercise for most fitness levels. The movement requires no equipment and uses only body weight. Beginners can reduce the range of motion — lifting the arm and leg just an inch or two off the floor — and slow the tempo until they build confidence and body awareness. Anyone with a pre-existing lower-back condition should consult a healthcare professional before adding spinal extension exercises.

How many repetitions and sets should I do?

For mobility and warm-up purposes, 2–3 sets of 10–16 total repetitions (5–8 per side) works well. As a cool-down or recovery drill, a single set of slow, controlled repetitions focusing on breathing and range of motion is sufficient. Since this is a stretching exercise rather than a strength movement, prioritise quality of movement over volume.

When is the best time to do the Swimming exercise?

Swimming fits well as a warm-up to activate the posterior chain before lower-body or back training, as a cool-down stretch after sitting for long periods, or as part of an active recovery routine. It is also popular in yoga and Pilates-style sessions as a foundation movement for spinal extension and back mobility work.

What are good alternatives to the Swimming exercise?

Exercises with a similar purpose include the Superman Hold, which keeps both arms and legs raised simultaneously for an isometric hold; Bird Dog, performed on all fours for a lower-back-friendly variation; and Back Extensions on a hyperextension bench for a more loaded spinal extension stimulus. All three target the back and hip extensors and can be used interchangeably depending on equipment availability and fitness level.

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