Sentinel is a “hold the line” circuit built on a very specific pattern: effort, control, then output. You start with squats to groove clean mechanics, then immediately prove you own that position with a 10-count hold, then finish the leg sequence with lunges to challenge balance one side at a time. That transition is sneaky-good: the hold pre-fatigues the stabilizers, so your lunges demand precision instead of autopilot. Think tall chest, knees tracking, quiet feet. This is strength that looks calm from the outside and feels like steel cables on the inside.

The second and third blocks keep the same logic but move it through the whole body. Push-ups (5+) build pressing strength, the hold (5+ count) turns it into a trunk and shoulder stability test, and then backfists add speed while you stay braced and aligned. You finish with core work that blends compression and rotation: knee-in and twist to light up deep abs and obliques, a 10-count hold to lock in control, then sitting twists to teach your torso to rotate without collapsing your posture. The flow keeps switching you between “move” and “resist,” which is exactly what a sentinel does: generate force, absorb force, stay steady anyway.

Got Dumbbells? Do the Sentinel Plus Workout instead.