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repetitions.
This exercise is a low-intensity way to strengthen your lower back and abdominal muscles.
- Step 1: Lie on your back with your knees bent and feet flat on the floor.
- Step 2: Tighten your abdominal muscles like you’re bracing for a punch. Hold for 5 seconds.
- Step 3: Relax and flatten your back, pulling your belly continue reading …
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