How to optimize the oxygen is to breathing techniques. This technique is often called 'sexual yoga' because this technique to train the area of femininity. Here are some types of breathing techniques are beneficial for your sex life, as quoted from the Health.
Shortness of breath, fast and rhythmic using the nose for one to three minutes will increase your sexual desire, especially if you are having trouble getting an orgasm. You can do this exercise, before or during lovemaking.
The second way is somewhat different, but the benefits just like the first. This method can be done before you make love.
First you have to do is sleep on your back with knees bent and legs wide enough. Begin breathing deeply until you feel the diaphragm expand. Imagine all the incoming air will lead to your genitals. When you exhale, throw as much as you remove all the oxygen in the body.
After doing some deep breaths, breathe rapidly with abdominal breathing and with the mouth open. Do as much as 10 to 20 times, then breathe in again with a deep breath through your nose and throw it through the mouth. That way, you will feel increased sex drive.