Using this chin - up bar is easy. First, adjust the bar to your desired position and lock it securely. Make sure it's properly fixed before using. You can then grab the bar and start doing chin - ups, hanging leg raises, or underhand hangs. Remember, the maximum user weight is 135 kg, so don't exceed this limit. After each use, check the bar and its locking mechanism for any signs of wear or damage. If it gets dirty, you can wipe it clean with a dry cloth. Store it in a dry place to prevent rusting and keep it in good condition for your next workout.