A rotating ab burner that hits the obliques hard.
Turn through your whole torso, don't just wave your arms side to side.
Adding a weight at your chest turns the twist into real rotational loading. The obliques drive each turn against resistance, one side then the other, while the abs hold the leaned-back position for the entire set. The further the weight travels from your body, the harder every rep gets, which makes this one of the easiest core moves to keep progressing for months.
Start light, something you can control for slow, full turns to each side. The leaned-back position punishes sloppiness fast. Progress by holding the weight further from your chest before you ever grab a heavier one.
Whatever you can grip comfortably at your chest. A plate holds flat, a dumbbell gripped by the ends feels secure, and a medicine ball is friendly for taps beside the hip. Your obliques cannot tell the difference.
When bodyweight sets with lifted feet stop being challenging in a normal rep range. Add load before adding endless reps, twenty slow weighted twists beat sixty fast empty ones.
