With hands about shoulder width apart, take a supinated grip and hang actively from the bar in a hollow position. (Shoulders depressed, Core and Lats engaged)
Keeping your legs straight, hinging only at hips, compress your core and bring your toes to the bar. Exhale on the way up.
Squeeze your legs together, and keep your arms straight. Engage your lats to restrict upper body movement.
Squeeze at the top, and slowly control back down.
Repeat for repetitions.
Keep the arms straight, limit movement from your upper body. Don’t arch your back at the bottom, keep tension on your core throughout.