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Core Crawl

Format
For Time
Duration
25-35 min
Equipment
Ruck (20/30 lb)

Description

Time to build that core: five rounds of bear crawls, Russian twists, flutter kicks, and mountain climbers.

Invite a friend to join you on this one →

Workout

Warm-up

5 min
  • 5-minute easy walk plus a few bear crawls to warm up.

5 Rounds For Time

  • 50m Ruck Bear Crawl
  • 20 Ruck Russian Twists
  • 20 Ruck Flutter Kicks (4-count)
  • 20 Ruck Mountain Climbers (4-count)

Cool Down

5 min
  • Easy walk, then stretch your core, hips, and shoulders.

Movement Breakdown

Ruck Bear Crawl

  • Start on hands and knees with the ruck on your back.
  • Lift your knees off the ground into a crawling position.
  • Move forward stepping opposite hand and foot together, then the other pair.
  • Keep your back flat and core braced as you move.

Ruck Russian Twists

  • Sit with knees bent, heels on the ground, torso leaned back slightly, holding the ruck at your chest.
  • Rotate your torso to tap the ruck on the ground beside your hip.
  • Rotate to the opposite side and repeat, keeping your core engaged throughout.

Ruck Flutter Kicks

  • Lie on your back with the ruck resting on your lower shins or held at your chest.
  • Lift your legs a few inches off the ground and flutter them in a small, steady kicking motion.
  • Keep your lower back pressed into the ground throughout.

Ruck Mountain Climbers

  • Begin in a plank position with hands directly under your shoulders and the ruck on your back.
  • Drive one knee toward your chest, then quickly switch legs in a running motion.
  • Keep a straight line from head to heels and a stable core throughout.