Rend is a dumbbell workout in the straight-sets format - not a circuit. Four exercises, each performed for 5 complete sets with 30 seconds of rest between sets before the next begins: 8 shoulder presses, 16 split lunges, 8 calf raises and 16 kneeling rows. Each movement gets torn through entirely before the next one starts.

To rend is to tear apart with force, and the straight-sets format is how this workout does it - one muscle group at a time, five sets deep, with rests short enough that recovery never quite completes. The 8s and 16s are the same number wearing two outfits: the unilateral exercises count both sides, so every station delivers 8 working reps per limb per set, and the loading is even across the whole card. The exercise order alternates push and pull, upper and lower: shoulder presses drive the dumbbells overhead while fresh, split lunges then rip into the legs one side at a time, calf raises load the lower leg with weight in hand, and kneeling rows finish by pulling from a braced single-arm position, the lats and mid-back closing the session. Forty total reps per exercise, accumulated set by set under shrinking recovery - that is how the tearing gets done, and rebuilding stronger is what the muscle does about it.

Press strictly overhead with ribs down and a full lockout, no leg drive. Keep split lunges in a fixed stance, back knee dropping straight down, dumbbells hanging quiet at your sides. Rise fully on each calf raise with a pause before lowering. In kneeling rows, brace on the forward thigh with a flat back and pull the dumbbell to your hip, squeezing at the top - the fifth set's rows must match the first's.

Rend, recover, rebuild. The muscle handles the last two - the five sets are your department.

Make it Harder: Cut every rest to 20 seconds and hold all 5 sets.

Make it Easier: Drop to 3 sets per exercise with the full 30 seconds between them.