Steady State Cardio is a low-impact circuit that holds one even line of effort from the first rep to the last: 20 step jacks, 20 punches, 20 more step jacks, 20 march steps, 20 punches and 20 final march steps, with 2 minutes of rest between sets. One foot on the ground throughout, one heart rate held steady throughout - that is the whole contract.

The circuit alternates between two lower body rhythms and one upper body one, and the alternation is what maintains the steady state. Step jacks and march steps trade the legwork back and forth - lateral stepping with overhead arms, then vertical knee lifts - so no single pattern accumulates enough fatigue to force a slowdown, while the two punch stations shift the work upstairs entirely, letting the legs recover in motion while the shoulders and heart keep the meter running. Nothing in the sequence spikes and nothing stalls; the effort just transfers from station to station like a current. This continuous moderate work is where the aerobic system does its patient building - stroke volume, capillary density, the unglamorous plumbing that every harder workout later draws on. The 2 minutes between sets is a genuine reset so each set holds the same clean, even line.

Step the jacks wide with a full arm swing to shoulder height or above, landing each step softly. Punch from a guard with rotation through the hips and a snappy return - relaxed shoulders, committed fists. March with knees to hip height and a purposeful opposite-arm swing. Keep the pace conversational across all six stations; if any single station leaves you breathless, the current is running too hot.

No surges, no stalls - just one even current, set after set. That is how a base gets built.

Make it Harder: Extend every station to 30 reps at exactly the same pace.

Make it Easier: Halve every station to 10 and keep the full 2 minutes between sets.