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This intense routine will absolutely pound your abdominals.
Think you've got what it takes?
The toughest 60 seconds you'll face all day.
This vicious CrossFit-inspired routine is the ultimate feat of fitness.
Think you can last 'till the end of this CrossFit-inspired circuit?
Build formidable conditioning with this CrossFit-inspired routine.
The golden rule of this circuit: You can't put the weights down.
This CrossFit-inspired routine will max your pain threshold.