A. There are two breathing exercises that you can do that can help improve your lung function and strength. 

1. Pursed-lip breathing: Sit comfortable with your neck and shoulders relaxed. Slowly breathe in through your nose while keeping your mouth closed, try to make your inhalation about two seconds. Purse your lips like you are about to whistle and slowly breathe out, exhaling should take twice as long as it took you to inhale. Repeat several times.
2. Diaphragmatic breathing: Sit or lie down comfortably and keep your shoulders and neck relaxed. Place one hand on your stomach and one hand on your chest, keeping your mouth closed, breathe in through your nose for two seconds. Breathe out through pursed lips for at least 2-3 times longer than the time you took to breathe in. While breathing, focus on your stomach, your stomach should rise as you inhale and lower as you exhale. 

For more information: Exercises for lung strength

A.  Several things could be causing your device to signal "low oxygen." 

1. Dirty filter: Make sure your filter is clear of debris and is also dry while using your device. Filters often need to be cleaned or changed routinely. Refer to your user device manual or contact your Apria branch for specific device filter maintenance instructions. 
2. Blockage: The air inlet area of your device, where air flows in to your machine, may be blocked or is up against something that's not allowing for proper airflow to come in to the machine.
3. Columns need replacing: The columns in your device are what produce the oxygen, and they may need to be replaced. If that is the case, contact your local Apria branch and we will get new ones sent to you.

A.  If you're able, coil up as much of your excess tubing as you can, just like you would a garden hose, and then only feed out as much as you need. This will keep it untangled and in a neat as well as avoid kinks. Another option is to keep your tubing elevated with clips along walkways and high-traffic areas of your home.