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THE ASANAS
Seated
This seated, lateral side stretch allows you to
mobilize your spine in a way that you probably don’t
often move it in everyday life. The novel movement that
this pose involves benets your intervertebral discs,
nervous system, and fascia.
THE BIG PICTURE
As you bend deeply to the side, muscles along your spine
stretch and strengthen. Your shoulder muscles engage to
reach your arms over your head, and your thigh muscles
on both sides stretch in dierent ways.
SIDE BEND
Parivrtta Janu Sirsasana
Neck
To rotate your neck, your
rotatores, multidus,
sternocleidomastoid, and
semispinalis cervicis engage
on the side toward the ground
(model’s right in this image),
while stretching on the
upward-facing side. Your
splenius capitis and splenius
cervicis engage on the
upward-facing side (model’s left
in this image), while stretching
on the downward-facing side.
Arms
Your shoulder exors—including
the anterior deltoids—engage. Your
middle deltoids and supraspinatus
engage to abduct your shoulders, and they
are externally rotated by your posterior
deltoids, infraspinatus, and teres minor
muscles. Your brachialis, biceps, and
brachioradialis muscles ex your elbows.
Thigh
Your hamstrings and gluteus
maximus stretch, while your
quadriceps engage to extend your
knee. Also, your internal rotators—
including gluteus medius, gluteus
minimus, and tensor fasciae latae—
engage while lengthening. You may
feel a stretch in your iliotibial band.
Extended lower leg
Your ankle dorsiexors
engage to dorsiex your ankle
and extend your toes. If you
are grabbing your foot and
pulling, you are probably
feeling a stretch in your calf
muscles, along with your
plantar muscles and fascia.
KEY
Joints
Muscles
Engaging
Engaging while
stretching
Stretching
Deltoids
Serratus anterior
Triceps brachii
Brachialis
Biceps brachii
Brachioradialis
Tibialis anterior
Flexor d. longus
Gastrocnemius
Plantar fascia
Sternocleidomastoid
Shoulder
Elbow
Ankle
US_064-065_Seated_side_bend_01.indd 64 20/09/2018 20:46