Plank, Russian twists, hollow hold — 40 seconds at each station, 10 seconds to switch, three times through. With a 30-second break between rounds, the whole circuit clocks in at exactly 8:00.
Two of the three stations are isometric holds, so the work here is refusing to let your shape break rather than chasing reps — the Russian twists in the middle are the only place you actually move. Eight minutes earns its keep at the end of a run or a lifting session, when your core is warm but the rest of you is spent. If the hollow hold collapses early, open it in the editor and shorten that one station instead of skipping it.
Five-station strength circuit hitting legs, push, pull, core, and conditioning. Three rounds at 0:45 work, 0:15 rest.
No equipment needed. Four moves, four fast rounds. Short rests force the pace and keep the heart rate up.