Day 4: The "Deep Armor" – The Hollow Body Hold

Welcome to Day 4! Today we are taking everything we learned in the Dead Bug and the Plank and condensing it into one "static" powerhouse move.

Why the Hollow Body for Runners?

When you’re at the end of a long run and your legs feel like lead, your pelvis starts to tilt forward (the "swayback"). This puts massive pressure on your lumbar spine and kills your power. The Hollow Body Hold trains the deep "inner armor" of your abs to keep your pelvis tucked and your spine safe, no matter how tired you get.

The Mission:

• 3 Sets of 30 Seconds

• Rest: 60 seconds between sets.

• The Key: Your lower back MUST stay glued to the floor. If a piece of paper can slide under your back, you’ve gone too high.

How to Perfect Your Form:

1. The Starting Point: Lie on your back with your legs straight and arms at your sides.

2. The "Tuck": Press your lower back into the floor and lift your shoulder blades just slightly off the ground.

3. The Lift: Lift your legs about 6–12 inches off the floor.

4. The Progression: If that feels solid, reach your arms over your head to create a "banana" shape with your body.

5. The Modification: If your back starts to arch, bend your knees slightly or lift your legs higher until your back is flat again.

✅ DAY 4 CHECK-IN:

Once you’ve completed your 3 sets, comment "ARMOR" below!

The "Shaking" Test: Did your core start to "vibrate" around the 20-second mark? That’s your nervous system learning to recruit those deep fibers. Let us know how long you held before the "shake" started!

Keep building that resilience. See you tomorrow!

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