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Put your fitness to the test with a category 1, 2, 3, 4, or 5.
This routine starts out hard—and ends even harder.
Give this grueling America's Cup-inspired conditioning routine a shot.
Combine high-intensity cardio with intervals of pushups.
Build size and strength with these tough routines.
Build total-body mass.
Target your abs and obliques in this rapid-fire circuit.
Target fat and develop lean muscle with this circuit program.