This adjustable chin-up bar or "door bar" is mounted between two walls by pressing on the latter. It is available in a small size, adjustable between 70 and 95 centimeters

Reminder: place the bar above the head, put your hands on the bar and pull yourself up, starting from a position where your arms are extended. These strength exercises will develop the biceps, the back muscles, the shoulders and the pectoral muscles. But the bar you choose will also exercise different muscles.