After anaerobic exercise, symptoms such as dizziness and nausea often appear. I brought moisturizing vitality oxygen, which is quite easy to use. It will be much easier to drink a few mouthfuls, and then walk slowly to recover for a while, and it will be completely safe. Very useful. You search this oxygen tank online. I hope to adopt my answer, and I am very grateful. If you need anything else, you can ask, thank you!