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These routines are perfect for marathoners and triathletes.
Build strength and endurance with these functional moves.
Stronger in 10 days.
This eight-move routine will hit every muscle in your body. Hard.
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.