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Strengthen your core by NOT moving... Kinda.
The Best Core Exercise From Bed
10 MIN SIX PACK ABS for TOTAL BEGINNERS (No Equipment)
50 Sit Ups Home Ab Workout – Calisthenics for beginners – NO EQUIPMENT
5 MINUTE LAZY ABS | EASY AT HOME AB WORKOUT | DO THIS WHEN YOU DON'T WANT TO MOVE | fitnessa ◡̈
Strengthen Your Core - Just 6 Minutes A Day!
DON’T BE A DOMER | Learn how to use your entire core!
Soft sit-ups