Gym machines can help you build strong ab muscles with weights and resistance more efficiently than bodyweight crunches, according to trainers.
How to get sculpted abs using just bodyweight, no heavy weights necessary - Yahoo Sports
7 Core Exercises To Building Strength And Sculpting Abs
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The Best 10-Minute Abdominal Workout for All Core Muscles
5 moves elite athletes and trainers do for strong, sculpted abs - Yahoo Sports
7 Core Exercises To Building Strength And Sculpting Abs
Maximise your core strength with one dumbbell and this standing ab workout
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4 benefits of glute training beyond a bigger booty, and the best exercises to do it, according to a personal trainer - Yahoo Sports
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