Zenith is a full body circuit named for the point directly above your head - and the workout spends its whole runtime traveling toward it. Lunges and side-to-side lunges work the legs low to the ground, plank walk-outs and push-ups take you all the way down to the floor, and then punches and overhead punches bring you back up until you are literally striking at the sky. Lowest point to highest point, one circuit.
Each of the three rows pairs one movement with its sideways or upward twin. Ten lunges bracket ten side-to-side lunges, so the legs work front-to-back, then laterally, then front-to-back again - the same muscles loaded along two different lines before you leave the standing position. The middle row does the same with a twist in the dose: just 2 plank walk-outs on either side of 10 push-ups. Two is the right number - a walk-out is a full-length traveling plank, and a pair of slow ones before and after the push-ups loads the shoulders and core more honestly than a rushed ten would. The final row sends everything upward: straight punches bracket overhead punches, shifting the shoulders from horizontal drive to vertical drive right at the point where the workout peaks.
Lunge with both knees bending to roughly 90 degrees and your torso tall; in the side-to-side lunges, sit back into the moving hip and keep both feet flat. Walk out with straight legs and small hand-steps, reaching full plank length before walking back. Keep your elbows at about 45 degrees from your body in the push-ups and your hips in line with your shoulders. Throw every punch controlled and complete - full extension, full return - and in the overhead punches, drive the fist straight up past your ear while your ribs stay stacked over your hips, without leaning back to borrow reach.
The sun at its zenith casts no shadow - finish the last set of overhead punches and neither will you.
Make it Harder: Add 2 more plank walk-outs to each side of the push-ups.
Make it Easier: Walk out from your knees and press the push-ups from your knees too.
