The six pack abs get all the love, but the obliques are way more responsible for movement & function.
The obliques have roles in:
✅Pelvic control
✅Trunk rotation
✅Trunk stiffness
✅Exhalation
They can be split into the internal...
and external obliques.
They have similar actions, but internal obliques have a larger role in breathing & the external with trunk rotation.
So given these roles, it’s important to consider the role of the muscle fiber orientation. They mainly run horizontally. This means we
want to train them in the frontal & transverse planes (sideways & rotationally) to recruit them for many of their functions.
I like to pair training pelvic control + exhalation because that’s what should be naturally occurring with the resting breath anyway.
To do this, I will
use a position that allows them to sense a posterior pelvic tilt, more obliques than six pack abs, and will be comfortable to breathe in.
This 90/90 side plank is WAY harder than you think if you add exhalation.
This is a go-to for beginners.
To train trunk rotation, I like a split stance to mirror gait/running a sense of the heel in the front, as that’s when we rotate our trunks to the same, stance-foot side.
Then I will cue very light rotations. It won’t take much to feel the trunk dissociation from the pelvis via the obliques.
Finally, to train the proper trunk stiffness aspect of them, sprinting is probably the #1 activity for that. I’m serious.
Other targeted work includes: Heavy deadlifts. But here’s the thing- instead of holding our breath in and bracing like all hell, exhale until
the obliques are felt. A reach helps with this. Then inhale on top of it and drive.
Way more obliques without needed to suck & hold air.
Nothing wrong with also targeting the six-pack abs. That’s fun too, but don’t forgot how important the other abdominal muscles are.
This is a Postural Restoration Institute exercise
• • •
Missing some Tweet in this thread? You can try to
force a refresh
The Tibialis Posterior is one of the most underrated muscles for fixing knee, ankle, and foot pain.
Weakness here shows up in countless injuries - yet most rehab overlooks it. Let’s break down why it matters & how to train it 👇
1️⃣ Why it’s so important
Research links a weak tibialis posterior to ankle & foot pain.
This muscle originates on the back of the shin and runs behind the medial ankle, under the foot. Its unique position makes it essential for arch control.
2️⃣ Controlling pronation
When your foot hits the ground, the arch naturally lowers (pronation).
The tibialis posterior decelerates this motion so it happens in a controlled, healthy way. Weakness = arch collapses too far, too fast.