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These girls with muscles may inspire more than the muscular men out there.
Here's what has changed, and what has been learned.
With the right plan and the right discipline, you can get seriously shredded in just 28 days.
These training vets take "old man strength" to another level, and they have some wisdom to share.
The plank with arm raise is a multi-functional exercise that improves shoulder and spinal stability while developing strength in the core and lower back regions.
Curtis Jackson's training focuses on building endurance and functional strength.
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